diff --git a/centaur/src/main/resources/standardTestCases/abort.restart_abort_jes.test b/centaur/src/main/resources/standardTestCases/abort.restart_abort_jes.test
index f9928c0ba8f..80192065e6c 100644
--- a/centaur/src/main/resources/standardTestCases/abort.restart_abort_jes.test
+++ b/centaur/src/main/resources/standardTestCases/abort.restart_abort_jes.test
@@ -2,7 +2,7 @@ ignore: false
 name: abort.restart_abort_jes
 testFormat: ScheduledAbortWithRestart
 callMark: scheduled_abort.aborted
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: abort/scheduled_abort.wdl
diff --git a/centaur/src/main/resources/standardTestCases/attempt_to_call_size_function_on_bucket.test b/centaur/src/main/resources/standardTestCases/attempt_to_call_size_function_on_bucket.test
index 57c4fae2939..4c444548580 100644
--- a/centaur/src/main/resources/standardTestCases/attempt_to_call_size_function_on_bucket.test
+++ b/centaur/src/main/resources/standardTestCases/attempt_to_call_size_function_on_bucket.test
@@ -1,6 +1,6 @@
 name: attempt_to_call_size_function_on_bucket
 testFormat: workflowfailure
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: attempt_to_call_size_function_on_bucket/attempt_to_call_size_function_on_bucket.wdl
diff --git a/centaur/src/main/resources/standardTestCases/bucket_name_with_no_trailing_slash.test b/centaur/src/main/resources/standardTestCases/bucket_name_with_no_trailing_slash.test
index 1ce0d9fdd50..a7de7263245 100644
--- a/centaur/src/main/resources/standardTestCases/bucket_name_with_no_trailing_slash.test
+++ b/centaur/src/main/resources/standardTestCases/bucket_name_with_no_trailing_slash.test
@@ -1,6 +1,6 @@
 name: bucket_name_with_no_trailing_slash
 testFormat: workflowfailure
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: attempt_to_localize_bucket_as_file/attempt_to_localize_bucket_as_file.wdl
diff --git a/centaur/src/main/resources/standardTestCases/call_cache_capoeira_jes.test b/centaur/src/main/resources/standardTestCases/call_cache_capoeira_jes.test
index 1aaec9914d4..cd9a3dcfef2 100644
--- a/centaur/src/main/resources/standardTestCases/call_cache_capoeira_jes.test
+++ b/centaur/src/main/resources/standardTestCases/call_cache_capoeira_jes.test
@@ -1,6 +1,6 @@
 name: call_cache_capoeira_jes
 testFormat: workflowsuccess
-backends: [Papi, Local, GCPBATCH]
+backends: [Papi, Local]
 retryTestFailures: false
 
 files {
diff --git a/centaur/src/main/resources/standardTestCases/call_cache_hit_prefixes_empty_hint_papi.test b/centaur/src/main/resources/standardTestCases/call_cache_hit_prefixes_empty_hint_papi.test
index 77d4623f765..d9c7ee419ed 100644
--- a/centaur/src/main/resources/standardTestCases/call_cache_hit_prefixes_empty_hint_papi.test
+++ b/centaur/src/main/resources/standardTestCases/call_cache_hit_prefixes_empty_hint_papi.test
@@ -1,7 +1,7 @@
 # A list of call cache hint prefixes is explicitly specified but empty.
 name: call_cache_hit_prefixes_empty_hint_papi
 testFormat: runtwiceexpectingcallcaching
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: call_cache_hit_prefixes/call_cache_hit_prefixes.wdl
diff --git a/centaur/src/main/resources/standardTestCases/call_cache_hit_prefixes_two_roots_empty_hint_cache_hit_papi.test b/centaur/src/main/resources/standardTestCases/call_cache_hit_prefixes_two_roots_empty_hint_cache_hit_papi.test
index 9352d7b72f6..a0ef536165e 100644
--- a/centaur/src/main/resources/standardTestCases/call_cache_hit_prefixes_two_roots_empty_hint_cache_hit_papi.test
+++ b/centaur/src/main/resources/standardTestCases/call_cache_hit_prefixes_two_roots_empty_hint_cache_hit_papi.test
@@ -3,7 +3,7 @@
 # should not see the first's cache entries.
 name: call_cache_hit_prefixes_two_roots_empty_hint_cache_hit_papi
 testFormat: runthriceexpectingcallcaching
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: call_cache_hit_prefixes/call_cache_hit_prefixes.wdl
diff --git a/centaur/src/main/resources/standardTestCases/call_cache_hit_prefixes_two_roots_empty_hint_cache_miss_papi.test b/centaur/src/main/resources/standardTestCases/call_cache_hit_prefixes_two_roots_empty_hint_cache_miss_papi.test
index 58d31f72c16..f8d68fe1378 100644
--- a/centaur/src/main/resources/standardTestCases/call_cache_hit_prefixes_two_roots_empty_hint_cache_miss_papi.test
+++ b/centaur/src/main/resources/standardTestCases/call_cache_hit_prefixes_two_roots_empty_hint_cache_miss_papi.test
@@ -2,7 +2,7 @@
 # Each run has different "jes_gcs_root"s so they should not see each other's cache entries.
 name: call_cache_hit_prefixes_two_roots_empty_hint_cache_miss_papi
 testFormat: runtwiceexpectingnocallcaching
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: call_cache_hit_prefixes/call_cache_hit_prefixes.wdl
diff --git a/centaur/src/main/resources/standardTestCases/checkpointing.test b/centaur/src/main/resources/standardTestCases/checkpointing.test
index 89a1d3dc633..84ab392f9d6 100644
--- a/centaur/src/main/resources/standardTestCases/checkpointing.test
+++ b/centaur/src/main/resources/standardTestCases/checkpointing.test
@@ -1,6 +1,6 @@
 name: checkpointing
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: checkpointing/checkpointing.wdl
diff --git a/centaur/src/main/resources/standardTestCases/collections_delete.test b/centaur/src/main/resources/standardTestCases/collections_delete.test
index a431598f565..3f01be2d295 100644
--- a/centaur/src/main/resources/standardTestCases/collections_delete.test
+++ b/centaur/src/main/resources/standardTestCases/collections_delete.test
@@ -2,7 +2,7 @@
 
 name: collections_delete
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: delete_intermediates/collections_delete.wdl
diff --git a/centaur/src/main/resources/standardTestCases/confirm_preemptible.test b/centaur/src/main/resources/standardTestCases/confirm_preemptible.test
index e0e8c44f187..7256a0db6f6 100644
--- a/centaur/src/main/resources/standardTestCases/confirm_preemptible.test
+++ b/centaur/src/main/resources/standardTestCases/confirm_preemptible.test
@@ -1,6 +1,6 @@
 name: confirm_preemptible
 testFormat: workflowsuccess
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: confirm_preemptible/confirm_preemptible.wdl
diff --git a/centaur/src/main/resources/standardTestCases/copy_workflow_outputs_scattered_papi.test b/centaur/src/main/resources/standardTestCases/copy_workflow_outputs_scattered_papi.test
index 651ef2aa2ab..77754b17913 100644
--- a/centaur/src/main/resources/standardTestCases/copy_workflow_outputs_scattered_papi.test
+++ b/centaur/src/main/resources/standardTestCases/copy_workflow_outputs_scattered_papi.test
@@ -1,5 +1,5 @@
 name: copy_workflow_outputs_scattered_papi
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 testFormat: workflowsuccess
 
 files {
diff --git a/centaur/src/main/resources/standardTestCases/copy_workflow_outputs_unscattered_papi.test b/centaur/src/main/resources/standardTestCases/copy_workflow_outputs_unscattered_papi.test
index b17f7b893f8..ce7a6141a6c 100644
--- a/centaur/src/main/resources/standardTestCases/copy_workflow_outputs_unscattered_papi.test
+++ b/centaur/src/main/resources/standardTestCases/copy_workflow_outputs_unscattered_papi.test
@@ -1,5 +1,5 @@
 name: copy_workflow_outputs_unscattered_papi
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 testFormat: workflowsuccess
 
 files {
diff --git a/centaur/src/main/resources/standardTestCases/custom_entrypoint.test b/centaur/src/main/resources/standardTestCases/custom_entrypoint.test
index a0c7373c020..fc201519e01 100644
--- a/centaur/src/main/resources/standardTestCases/custom_entrypoint.test
+++ b/centaur/src/main/resources/standardTestCases/custom_entrypoint.test
@@ -1,6 +1,6 @@
 name: custom_entrypoint
 testFormat: workflowsuccess
-backends: [Papi, Papiv2, GCPBATCH]
+backends: [Papi, Papiv2]
 
 files {
   workflow: custom_entrypoint/custom_entrypoint.wdl
diff --git a/centaur/src/main/resources/standardTestCases/custom_mount_point.test b/centaur/src/main/resources/standardTestCases/custom_mount_point.test
index 5cb4e5a9d9e..6496c1f6c76 100644
--- a/centaur/src/main/resources/standardTestCases/custom_mount_point.test
+++ b/centaur/src/main/resources/standardTestCases/custom_mount_point.test
@@ -1,6 +1,6 @@
 name: custom_mount_point
 testFormat: workflowsuccess
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: custom_mount_point/custom_mount_point.wdl
diff --git a/centaur/src/main/resources/standardTestCases/dedup_localizations_papi_v2.test b/centaur/src/main/resources/standardTestCases/dedup_localizations_papi_v2.test
index a49d847c3ff..71edd6de8ea 100644
--- a/centaur/src/main/resources/standardTestCases/dedup_localizations_papi_v2.test
+++ b/centaur/src/main/resources/standardTestCases/dedup_localizations_papi_v2.test
@@ -1,6 +1,6 @@
 name: dedup_localizations_papi_v2
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: dedup_localizations_papi_v2/dedup_localizations_papi_v2.wdl
diff --git a/centaur/src/main/resources/standardTestCases/directory_type_output_papi.test b/centaur/src/main/resources/standardTestCases/directory_type_output_papi.test
index 9f7f179bde3..67e435db619 100644
--- a/centaur/src/main/resources/standardTestCases/directory_type_output_papi.test
+++ b/centaur/src/main/resources/standardTestCases/directory_type_output_papi.test
@@ -1,7 +1,7 @@
 name: directory_type_output_papi
 testFormat: workflowsuccess
 tags: ["wdl_cascades"]
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: wdl_cascades/directory_type_output/directory_type_output.wdl
diff --git a/centaur/src/main/resources/standardTestCases/directory_type_papi.test b/centaur/src/main/resources/standardTestCases/directory_type_papi.test
index c97224d077e..4d953e03c4e 100644
--- a/centaur/src/main/resources/standardTestCases/directory_type_papi.test
+++ b/centaur/src/main/resources/standardTestCases/directory_type_papi.test
@@ -1,7 +1,7 @@
 name: directory_type_papi
 testFormat: workflowsuccess
 tags: ["wdl_cascades"]
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: wdl_cascades/directory_type/directory_type.wdl
diff --git a/centaur/src/main/resources/standardTestCases/do_not_retry_rc1.test b/centaur/src/main/resources/standardTestCases/do_not_retry_rc1.test
index 7dec70049f5..b8d6c98f24d 100644
--- a/centaur/src/main/resources/standardTestCases/do_not_retry_rc1.test
+++ b/centaur/src/main/resources/standardTestCases/do_not_retry_rc1.test
@@ -1,6 +1,6 @@
 name: do_not_retry_rc1
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: retry_with_more_memory/do_not_retry_rc1.wdl
diff --git a/centaur/src/main/resources/standardTestCases/docker_hash_dockerhub_private.test b/centaur/src/main/resources/standardTestCases/docker_hash_dockerhub_private.test
index 9b120572f13..69abefdd28b 100644
--- a/centaur/src/main/resources/standardTestCases/docker_hash_dockerhub_private.test
+++ b/centaur/src/main/resources/standardTestCases/docker_hash_dockerhub_private.test
@@ -1,6 +1,6 @@
 name: docker_hash_dockerhub_private
 testFormat: workflowsuccess
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: docker_hash/docker_hash_dockerhub_private.wdl
diff --git a/centaur/src/main/resources/standardTestCases/docker_hash_gcr_private.test b/centaur/src/main/resources/standardTestCases/docker_hash_gcr_private.test
index 40e73270da3..45d7e377e2a 100644
--- a/centaur/src/main/resources/standardTestCases/docker_hash_gcr_private.test
+++ b/centaur/src/main/resources/standardTestCases/docker_hash_gcr_private.test
@@ -1,6 +1,6 @@
 name: docker_hash_gcr_private
 testFormat: workflowsuccess
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: docker_hash/docker_hash_gcr_private.wdl
diff --git a/centaur/src/main/resources/standardTestCases/docker_size_dockerhub.test b/centaur/src/main/resources/standardTestCases/docker_size_dockerhub.test
index 07fb49f523c..4cfa8585fab 100644
--- a/centaur/src/main/resources/standardTestCases/docker_size_dockerhub.test
+++ b/centaur/src/main/resources/standardTestCases/docker_size_dockerhub.test
@@ -1,6 +1,6 @@
 name: docker_size_dockerhub
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: docker_size/docker_size_dockerhub.wdl
diff --git a/centaur/src/main/resources/standardTestCases/docker_size_gcr.test b/centaur/src/main/resources/standardTestCases/docker_size_gcr.test
index 0343890b95b..a9ec45a7304 100644
--- a/centaur/src/main/resources/standardTestCases/docker_size_gcr.test
+++ b/centaur/src/main/resources/standardTestCases/docker_size_gcr.test
@@ -1,6 +1,6 @@
 name: docker_size_gcr
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: docker_size/docker_size_gcr.wdl
diff --git a/centaur/src/main/resources/standardTestCases/draft3_call_cache_capoeira_jes.test b/centaur/src/main/resources/standardTestCases/draft3_call_cache_capoeira_jes.test
index c095d8ef60e..0f8526d54d8 100644
--- a/centaur/src/main/resources/standardTestCases/draft3_call_cache_capoeira_jes.test
+++ b/centaur/src/main/resources/standardTestCases/draft3_call_cache_capoeira_jes.test
@@ -1,6 +1,6 @@
 name: draft3_call_cache_capoeira_jes
 testFormat: workflowsuccess
-backends: [Papi, Local, GCPBATCH]
+backends: [Papi, Local]
 workflowType: WDL
 workflowTypeVersion: 1.0
 tags: ["wdl_1.0"]
diff --git a/centaur/src/main/resources/standardTestCases/draft3_custom_mount_point.test b/centaur/src/main/resources/standardTestCases/draft3_custom_mount_point.test
index 9d8e29e553c..ca26105560f 100644
--- a/centaur/src/main/resources/standardTestCases/draft3_custom_mount_point.test
+++ b/centaur/src/main/resources/standardTestCases/draft3_custom_mount_point.test
@@ -1,6 +1,6 @@
 name: draft3_custom_mount_point
 testFormat: workflowsuccess
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: wdl_draft3/custom_mount_point/custom_mount_point.wdl
diff --git a/centaur/src/main/resources/standardTestCases/draft3_nio_file_papi2.test b/centaur/src/main/resources/standardTestCases/draft3_nio_file_papi2.test
index 0a2f9985314..c31e38db44a 100644
--- a/centaur/src/main/resources/standardTestCases/draft3_nio_file_papi2.test
+++ b/centaur/src/main/resources/standardTestCases/draft3_nio_file_papi2.test
@@ -3,7 +3,7 @@ testFormat: workflowsuccess
 workflowType: WDL
 workflowTypeVersion: 1.0
 tags: ["wdl_1.0"]
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: wdl_draft3/draft3_nio_file/draft3_nio_file_papi2.wdl
diff --git a/centaur/src/main/resources/standardTestCases/draft3_read_write_functions_papi.test b/centaur/src/main/resources/standardTestCases/draft3_read_write_functions_papi.test
index c1d6c531a5a..6a47701aae3 100644
--- a/centaur/src/main/resources/standardTestCases/draft3_read_write_functions_papi.test
+++ b/centaur/src/main/resources/standardTestCases/draft3_read_write_functions_papi.test
@@ -1,7 +1,7 @@
 name: draft3_read_write_functions_papi
 testFormat: workflowsuccess
 tags: ["wdl_1.0"]
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 tags: ["wdl_1.0"]
 
 files {
diff --git a/centaur/src/main/resources/standardTestCases/error_10_preemptible.test b/centaur/src/main/resources/standardTestCases/error_10_preemptible.test
index 9ddfadc8d32..ea4cd5bf375 100644
--- a/centaur/src/main/resources/standardTestCases/error_10_preemptible.test
+++ b/centaur/src/main/resources/standardTestCases/error_10_preemptible.test
@@ -1,6 +1,6 @@
 name: error_10_preemptible
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: error_10_preemptible/error_10_preemptible.wdl
diff --git a/centaur/src/main/resources/standardTestCases/exhaustive_delete.test b/centaur/src/main/resources/standardTestCases/exhaustive_delete.test
index 5c4bc13208a..b114c567f68 100644
--- a/centaur/src/main/resources/standardTestCases/exhaustive_delete.test
+++ b/centaur/src/main/resources/standardTestCases/exhaustive_delete.test
@@ -2,7 +2,7 @@
 
 name: exhaustive_delete
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: delete_intermediates/exhaustive_delete.wdl
diff --git a/centaur/src/main/resources/standardTestCases/failures.restart_while_failing_jes.test b/centaur/src/main/resources/standardTestCases/failures.restart_while_failing_jes.test
index 6e359d696ed..182a833fbdb 100644
--- a/centaur/src/main/resources/standardTestCases/failures.restart_while_failing_jes.test
+++ b/centaur/src/main/resources/standardTestCases/failures.restart_while_failing_jes.test
@@ -1,7 +1,7 @@
 name: failures.restart_while_failing_jes
 testFormat: WorkflowFailureRestartWithRecover
 callMark: restart_while_failing.B1
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 tags: [restart]
 
 files {
diff --git a/centaur/src/main/resources/standardTestCases/fast_fail_noAddress_gcpbatch.test b/centaur/src/main/resources/standardTestCases/fast_fail_noAddress_gcpbatch.test
deleted file mode 100644
index c2f0367bfba..00000000000
--- a/centaur/src/main/resources/standardTestCases/fast_fail_noAddress_gcpbatch.test
+++ /dev/null
@@ -1,16 +0,0 @@
-# NB: To request this test by name, make it lowercase, eg sbt "centaur/it:testOnly * -- -n fast_fail_noaddress_gcpbatch"
-# This is just like the PAPI v2 version except the error message has changed.
-name: fast_fail_noAddress_gcpbatch
-backends: [GCPBATCH]
-backendsMode: any
-testFormat: workflowfailure
-
-files {
-  workflow: fast_fail_noAddress/fast_fail_noAddress.wdl
-}
-
-metadata {
-  workflowName: fast_fail_noAddress
-  "failures.0.causedBy.0.message": "Unable to complete Batch request due to a problem with the request (io.grpc.StatusRuntimeException: INVALID_ARGUMENT: no_external_ip_address field is invalid. both network and subnetwork have to be specified when no_external_ip_address is true). "
-  status: Failed
-}
diff --git a/centaur/src/main/resources/standardTestCases/final_call_logs_dir_jes.test b/centaur/src/main/resources/standardTestCases/final_call_logs_dir_jes.test
index d0a21f8b765..d983a315384 100644
--- a/centaur/src/main/resources/standardTestCases/final_call_logs_dir_jes.test
+++ b/centaur/src/main/resources/standardTestCases/final_call_logs_dir_jes.test
@@ -1,7 +1,7 @@
 # Tests that a runtime option to save call logs is copying said logs appropriately.
 
 name: final_call_logs_dir_jes
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 testFormat: workflowsuccess
 
diff --git a/centaur/src/main/resources/standardTestCases/gcs_file_name_with_newline_in_the_middle.test b/centaur/src/main/resources/standardTestCases/gcs_file_name_with_newline_in_the_middle.test
index 2006b85ff8a..77c3423c4f1 100644
--- a/centaur/src/main/resources/standardTestCases/gcs_file_name_with_newline_in_the_middle.test
+++ b/centaur/src/main/resources/standardTestCases/gcs_file_name_with_newline_in_the_middle.test
@@ -1,6 +1,6 @@
 name: gcs_file_name_with_spaces_in_the_middle
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: gcs_file_name_with_newline_in_the_middle/gcs_file_name_with_newline_in_the_middle.wdl
diff --git a/centaur/src/main/resources/standardTestCases/gcs_path_ending_with_newline.test b/centaur/src/main/resources/standardTestCases/gcs_path_ending_with_newline.test
index a7bbf81a2c8..cc0cd9d31d2 100644
--- a/centaur/src/main/resources/standardTestCases/gcs_path_ending_with_newline.test
+++ b/centaur/src/main/resources/standardTestCases/gcs_path_ending_with_newline.test
@@ -1,6 +1,6 @@
 name: gcs_path_ending_with_newline
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: gcs_path_ending_with_newline/gcs_path_ending_with_newline.wdl
diff --git a/centaur/src/main/resources/standardTestCases/gcs_underscore_bucket.test b/centaur/src/main/resources/standardTestCases/gcs_underscore_bucket.test
index e91f3dbdf61..639c11677e5 100644
--- a/centaur/src/main/resources/standardTestCases/gcs_underscore_bucket.test
+++ b/centaur/src/main/resources/standardTestCases/gcs_underscore_bucket.test
@@ -1,6 +1,6 @@
 name: gcs_underscore_bucket
 testFormat: workflowsuccess
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   inputs: gcs_underscore_bucket/gcs_underscore_bucket.inputs
diff --git a/centaur/src/main/resources/standardTestCases/google_labels_bad.test b/centaur/src/main/resources/standardTestCases/google_labels_bad.test
index 9da8bfae5f9..720f8a18050 100644
--- a/centaur/src/main/resources/standardTestCases/google_labels_bad.test
+++ b/centaur/src/main/resources/standardTestCases/google_labels_bad.test
@@ -1,6 +1,6 @@
 name: google_labels_bad
 testFormat: workflowfailure
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: google_labels/google_labels.wdl
diff --git a/centaur/src/main/resources/standardTestCases/google_labels_good.test b/centaur/src/main/resources/standardTestCases/google_labels_good.test
index 36b12ed26af..76cf5ec5b16 100644
--- a/centaur/src/main/resources/standardTestCases/google_labels_good.test
+++ b/centaur/src/main/resources/standardTestCases/google_labels_good.test
@@ -1,6 +1,6 @@
 name: google_labels_good
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: google_labels/google_labels.wdl
diff --git a/centaur/src/main/resources/standardTestCases/google_labels_subworkflows.test b/centaur/src/main/resources/standardTestCases/google_labels_subworkflows.test
index 131b8801bd1..21b734c94fc 100644
--- a/centaur/src/main/resources/standardTestCases/google_labels_subworkflows.test
+++ b/centaur/src/main/resources/standardTestCases/google_labels_subworkflows.test
@@ -1,6 +1,6 @@
 name: google_labels_sub
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: google_labels/wrapper.wdl
diff --git a/centaur/src/main/resources/standardTestCases/gpu_cuda_image.test b/centaur/src/main/resources/standardTestCases/gpu_cuda_image.test
index 466d6005edf..b5addf6e6ca 100644
--- a/centaur/src/main/resources/standardTestCases/gpu_cuda_image.test
+++ b/centaur/src/main/resources/standardTestCases/gpu_cuda_image.test
@@ -1,6 +1,6 @@
 name: gpu_cuda_image
 testFormat: workflowsuccess
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 ignore: true
 
 files {
diff --git a/centaur/src/main/resources/standardTestCases/gpu_on_papi_invalid.test b/centaur/src/main/resources/standardTestCases/gpu_on_papi_invalid.test
index a9eed001085..3923a73b687 100644
--- a/centaur/src/main/resources/standardTestCases/gpu_on_papi_invalid.test
+++ b/centaur/src/main/resources/standardTestCases/gpu_on_papi_invalid.test
@@ -1,6 +1,6 @@
 name: gpu_on_papi_invalid
 testFormat: workflowfailure
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: gpu_on_papi/gpu_on_papi.wdl
diff --git a/centaur/src/main/resources/standardTestCases/gpu_on_papi_valid.test b/centaur/src/main/resources/standardTestCases/gpu_on_papi_valid.test
index f066e92be04..436148ee77b 100644
--- a/centaur/src/main/resources/standardTestCases/gpu_on_papi_valid.test
+++ b/centaur/src/main/resources/standardTestCases/gpu_on_papi_valid.test
@@ -1,6 +1,6 @@
 name: gpu_on_papi_valid
 testFormat: workflowsuccess
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 ignore: true
 
 files {
diff --git a/centaur/src/main/resources/standardTestCases/hello_delete.test b/centaur/src/main/resources/standardTestCases/hello_delete.test
index cca0667b544..95b5e839e92 100644
--- a/centaur/src/main/resources/standardTestCases/hello_delete.test
+++ b/centaur/src/main/resources/standardTestCases/hello_delete.test
@@ -2,7 +2,7 @@
 
 name: hello_delete
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: delete_intermediates/hello_delete.wdl
diff --git a/centaur/src/main/resources/standardTestCases/hello_google_legacy_machine_selection.test b/centaur/src/main/resources/standardTestCases/hello_google_legacy_machine_selection.test
index 443de24d375..1930c075c74 100644
--- a/centaur/src/main/resources/standardTestCases/hello_google_legacy_machine_selection.test
+++ b/centaur/src/main/resources/standardTestCases/hello_google_legacy_machine_selection.test
@@ -1,6 +1,6 @@
 name: hello_google_legacy_machine_selection
 testFormat: workflowsuccess
-backends: [ Papiv2, GCPBATCH ]
+backends: [ Papiv2 ]
 
 files {
   workflow: wdl_draft3/hello/hello.wdl
diff --git a/centaur/src/main/resources/standardTestCases/http_inputs.test b/centaur/src/main/resources/standardTestCases/http_inputs.test
index af8966d5223..fd80cc1e093 100644
--- a/centaur/src/main/resources/standardTestCases/http_inputs.test
+++ b/centaur/src/main/resources/standardTestCases/http_inputs.test
@@ -1,5 +1,5 @@
 name: http_inputs
-backends: [Local, Papiv2, GCPBATCH]
+backends: [Local, Papiv2]
 testFormat: workflowsuccess
 skipDescribeEndpointValidation: true
 
diff --git a/centaur/src/main/resources/standardTestCases/input_expressions.test b/centaur/src/main/resources/standardTestCases/input_expressions.test
index 26575d24729..f26a0a35aeb 100644
--- a/centaur/src/main/resources/standardTestCases/input_expressions.test
+++ b/centaur/src/main/resources/standardTestCases/input_expressions.test
@@ -1,6 +1,6 @@
 name: input_expressions
 testFormat: workflowsuccess
-backends: [Papi, Local, GCPBATCH]
+backends: [Papi, Local]
 
 files {
   workflow: input_expressions/input_expressions.wdl
diff --git a/centaur/src/main/resources/standardTestCases/input_from_bucket_with_requester_pays.test b/centaur/src/main/resources/standardTestCases/input_from_bucket_with_requester_pays.test
index 42940db1ffb..5643e26bc99 100644
--- a/centaur/src/main/resources/standardTestCases/input_from_bucket_with_requester_pays.test
+++ b/centaur/src/main/resources/standardTestCases/input_from_bucket_with_requester_pays.test
@@ -1,6 +1,6 @@
 name: input_from_bucket_with_requester_pays
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 ignore: true
 workflowType: WDL
 workflowTypeVersion: 1.0
diff --git a/centaur/src/main/resources/standardTestCases/invalid_use_reference_disks_specification.test b/centaur/src/main/resources/standardTestCases/invalid_use_reference_disks_specification.test
index 699a506f3ed..7d6e8c93949 100644
--- a/centaur/src/main/resources/standardTestCases/invalid_use_reference_disks_specification.test
+++ b/centaur/src/main/resources/standardTestCases/invalid_use_reference_disks_specification.test
@@ -1,6 +1,6 @@
 name: invalid_use_reference_disks_specification
 testFormat: workflowfailure
-backends: [ Papiv2, GCPBATCH ]
+backends: [ Papiv2 ]
 
 files {
   workflow: invalid_use_reference_disks_specification/invalid_use_reference_disks_specification.wdl
diff --git a/centaur/src/main/resources/standardTestCases/invalidate_bad_caches_jes.test b/centaur/src/main/resources/standardTestCases/invalidate_bad_caches_jes.test
index d427e11a591..a09c834ff31 100644
--- a/centaur/src/main/resources/standardTestCases/invalidate_bad_caches_jes.test
+++ b/centaur/src/main/resources/standardTestCases/invalidate_bad_caches_jes.test
@@ -1,6 +1,6 @@
 name: invalidate_bad_caches_jes
 testFormat: workflowsuccess
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: invalidate_bad_caches/invalidate_bad_caches.wdl
diff --git a/centaur/src/main/resources/standardTestCases/invalidate_bad_caches_use_good_jes.test b/centaur/src/main/resources/standardTestCases/invalidate_bad_caches_use_good_jes.test
index 9bd79e1e326..6d72c14c648 100644
--- a/centaur/src/main/resources/standardTestCases/invalidate_bad_caches_use_good_jes.test
+++ b/centaur/src/main/resources/standardTestCases/invalidate_bad_caches_use_good_jes.test
@@ -1,6 +1,6 @@
 name: invalidate_bad_caches_use_good_jes
 testFormat: workflowsuccess
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: invalidate_bad_caches/invalidate_bad_caches_use_good.wdl
diff --git a/centaur/src/main/resources/standardTestCases/jes_labels.test b/centaur/src/main/resources/standardTestCases/jes_labels.test
index 4b258a67503..d2b9840972f 100644
--- a/centaur/src/main/resources/standardTestCases/jes_labels.test
+++ b/centaur/src/main/resources/standardTestCases/jes_labels.test
@@ -1,7 +1,7 @@
 name: jes_labels
 testFormat: workflowsuccess
 tags: [ labels ]
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: labels/jes_labels.wdl
diff --git a/centaur/src/main/resources/standardTestCases/large_final_workflow_outputs_dir.test b/centaur/src/main/resources/standardTestCases/large_final_workflow_outputs_dir.test
index 32df4c253eb..4f09e0ec31b 100644
--- a/centaur/src/main/resources/standardTestCases/large_final_workflow_outputs_dir.test
+++ b/centaur/src/main/resources/standardTestCases/large_final_workflow_outputs_dir.test
@@ -1,6 +1,6 @@
 name: large_final_workflow_outputs_dir
 testFormat: workflowsuccess
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: large_final_workflow_outputs_dir/large_final_workflow_outputs_dir.wdl
diff --git a/centaur/src/main/resources/standardTestCases/local_gcs.test b/centaur/src/main/resources/standardTestCases/local_gcs.test
index c64ec167e1e..65687830344 100644
--- a/centaur/src/main/resources/standardTestCases/local_gcs.test
+++ b/centaur/src/main/resources/standardTestCases/local_gcs.test
@@ -1,6 +1,6 @@
 name: local_gcs
 testFormat: workflowsuccess
-backends: [Papi, Local, GCPBATCH]
+backends: [Papi, Local]
 
 files {
   workflow: local_gcs/local_gcs.wdl
diff --git a/centaur/src/main/resources/standardTestCases/localization_sanity_papi_v2.test b/centaur/src/main/resources/standardTestCases/localization_sanity_papi_v2.test
index f062235580b..edf5789b98d 100644
--- a/centaur/src/main/resources/standardTestCases/localization_sanity_papi_v2.test
+++ b/centaur/src/main/resources/standardTestCases/localization_sanity_papi_v2.test
@@ -2,7 +2,7 @@ name: localization_sanity_papi_v2
 testFormat: workflowsuccess
 workflowType: WDL
 workflowTypeVersion: 1.0
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: localization_sanity_papi_v2/localization_sanity_papi_v2.wdl
diff --git a/centaur/src/main/resources/standardTestCases/lots_of_inputs_papiv2.test b/centaur/src/main/resources/standardTestCases/lots_of_inputs_papiv2.test
index 72b81a520c1..a3ea44e0a95 100644
--- a/centaur/src/main/resources/standardTestCases/lots_of_inputs_papiv2.test
+++ b/centaur/src/main/resources/standardTestCases/lots_of_inputs_papiv2.test
@@ -4,7 +4,7 @@
 name: lots_of_inputs_papiv2
 testFormat: workflowsuccess
 tags: [ big_metadata ]
-backends: [ Papiv2, GCPBATCH ]
+backends: [ Papiv2 ]
 
 files {
   workflow: lots_of_inputs/lots_of_inputs.wdl
diff --git a/centaur/src/main/resources/standardTestCases/missing_delete.test b/centaur/src/main/resources/standardTestCases/missing_delete.test
index c54e3a1960f..d0154ca6b03 100644
--- a/centaur/src/main/resources/standardTestCases/missing_delete.test
+++ b/centaur/src/main/resources/standardTestCases/missing_delete.test
@@ -2,7 +2,7 @@
 
 name: missing_delete
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: delete_intermediates/missing_delete.wdl
diff --git a/centaur/src/main/resources/standardTestCases/missing_input_failure_papiv2.test b/centaur/src/main/resources/standardTestCases/missing_input_failure_papiv2.test
index cd3a6d10125..f3b9e41094c 100644
--- a/centaur/src/main/resources/standardTestCases/missing_input_failure_papiv2.test
+++ b/centaur/src/main/resources/standardTestCases/missing_input_failure_papiv2.test
@@ -1,6 +1,6 @@
 name: missing_input_failure_papiv2
 testFormat: workflowfailure
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: missing_input_failure/missing_input_failure.wdl
diff --git a/centaur/src/main/resources/standardTestCases/monitoring_image_script.test b/centaur/src/main/resources/standardTestCases/monitoring_image_script.test
index dad4eeee969..497f507147b 100644
--- a/centaur/src/main/resources/standardTestCases/monitoring_image_script.test
+++ b/centaur/src/main/resources/standardTestCases/monitoring_image_script.test
@@ -1,6 +1,6 @@
 name: monitoring_image_script
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: monitoring_image_script/monitoring_image_script.wdl
diff --git a/centaur/src/main/resources/standardTestCases/monitoring_image_script_with_entrypoints.test b/centaur/src/main/resources/standardTestCases/monitoring_image_script_with_entrypoints.test
index 0cabf22ffa7..e4912441346 100644
--- a/centaur/src/main/resources/standardTestCases/monitoring_image_script_with_entrypoints.test
+++ b/centaur/src/main/resources/standardTestCases/monitoring_image_script_with_entrypoints.test
@@ -1,6 +1,6 @@
 name: monitoring_image_script_with_entrypoints
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: monitoring_image_script/monitoring_image_script.wdl
diff --git a/centaur/src/main/resources/standardTestCases/monitoring_log_papiv2.test b/centaur/src/main/resources/standardTestCases/monitoring_log_papiv2.test
index 45714086cda..7f83c2b8e5a 100644
--- a/centaur/src/main/resources/standardTestCases/monitoring_log_papiv2.test
+++ b/centaur/src/main/resources/standardTestCases/monitoring_log_papiv2.test
@@ -2,7 +2,7 @@
 
 name: monitoring_log
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: monitoring_log/monitoring_log.wdl
diff --git a/centaur/src/main/resources/standardTestCases/monitoring_script_localization_failure.test b/centaur/src/main/resources/standardTestCases/monitoring_script_localization_failure.test
index 4beb8cc21d6..90d9dd77022 100644
--- a/centaur/src/main/resources/standardTestCases/monitoring_script_localization_failure.test
+++ b/centaur/src/main/resources/standardTestCases/monitoring_script_localization_failure.test
@@ -1,6 +1,6 @@
 name: monitoring_script_localization_failure
 testFormat: workflowfailure
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: monitoring_script_localization_failure/monitoring_script_localization_failure.wdl
diff --git a/centaur/src/main/resources/standardTestCases/no_cache_delete.test b/centaur/src/main/resources/standardTestCases/no_cache_delete.test
index 44170aa8a32..40ab15edbd7 100644
--- a/centaur/src/main/resources/standardTestCases/no_cache_delete.test
+++ b/centaur/src/main/resources/standardTestCases/no_cache_delete.test
@@ -2,7 +2,7 @@
 
 name: no_cache_delete
 testFormat: runtwiceexpectingnocallcaching
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: delete_intermediates/no_cache_delete.wdl
diff --git a/centaur/src/main/resources/standardTestCases/no_input_delete.test b/centaur/src/main/resources/standardTestCases/no_input_delete.test
index 94160e14b14..0b4223524c7 100644
--- a/centaur/src/main/resources/standardTestCases/no_input_delete.test
+++ b/centaur/src/main/resources/standardTestCases/no_input_delete.test
@@ -2,7 +2,7 @@
 
 name: no_input_delete
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: delete_intermediates/no_input_delete_setup.wdl
diff --git a/centaur/src/main/resources/standardTestCases/no_output_delete.test b/centaur/src/main/resources/standardTestCases/no_output_delete.test
index 5c58d04e4b4..c85df6be65d 100644
--- a/centaur/src/main/resources/standardTestCases/no_output_delete.test
+++ b/centaur/src/main/resources/standardTestCases/no_output_delete.test
@@ -2,7 +2,7 @@
 
 name: no_output_delete
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: delete_intermediates/no_output_delete.wdl
diff --git a/centaur/src/main/resources/standardTestCases/no_task_no_output_delete.test b/centaur/src/main/resources/standardTestCases/no_task_no_output_delete.test
index 606a0940339..151a934bebd 100644
--- a/centaur/src/main/resources/standardTestCases/no_task_no_output_delete.test
+++ b/centaur/src/main/resources/standardTestCases/no_task_no_output_delete.test
@@ -2,7 +2,7 @@
 
 name: no_task_no_output_delete
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: delete_intermediates/no_task_no_output_delete.wdl
diff --git a/centaur/src/main/resources/standardTestCases/papi_cpu_platform.test b/centaur/src/main/resources/standardTestCases/papi_cpu_platform.test
index 401ed0977bf..7b38c3a25d7 100644
--- a/centaur/src/main/resources/standardTestCases/papi_cpu_platform.test
+++ b/centaur/src/main/resources/standardTestCases/papi_cpu_platform.test
@@ -1,6 +1,6 @@
 name: papi_cpu_platform
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: papi_cpu_platform/papi_cpu_platform.wdl
diff --git a/centaur/src/main/resources/standardTestCases/papi_delocalization_required_files.test b/centaur/src/main/resources/standardTestCases/papi_delocalization_required_files.test
index 863e37fe9b8..111552eac1b 100644
--- a/centaur/src/main/resources/standardTestCases/papi_delocalization_required_files.test
+++ b/centaur/src/main/resources/standardTestCases/papi_delocalization_required_files.test
@@ -1,6 +1,6 @@
 name: papi_delocalization_required_files
 testFormat: workflowfailure
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: papi_delocalization_required_files/papi_delocalization_required_files.wdl
diff --git a/centaur/src/main/resources/standardTestCases/papi_fail_on_bad_attrs.test b/centaur/src/main/resources/standardTestCases/papi_fail_on_bad_attrs.test
index 766cf37077f..36c1fcd5575 100644
--- a/centaur/src/main/resources/standardTestCases/papi_fail_on_bad_attrs.test
+++ b/centaur/src/main/resources/standardTestCases/papi_fail_on_bad_attrs.test
@@ -1,6 +1,6 @@
 name: papi_fail_on_bad_attrs
 testFormat: workflowfailure
-backends: [Papi, GCPBATCH] # Only PAPI should object to the malformed disk attribute
+backends: [Papi] # Only PAPI should object to the malformed disk attribute
 
 files {
   workflow: papi_fail_on_bad_attrs/papi_fail_on_bad_attrs.wdl
diff --git a/centaur/src/main/resources/standardTestCases/papi_preemptible_and_max_retries.test b/centaur/src/main/resources/standardTestCases/papi_preemptible_and_max_retries.test
index ac4cb09ede5..ad055cccee9 100644
--- a/centaur/src/main/resources/standardTestCases/papi_preemptible_and_max_retries.test
+++ b/centaur/src/main/resources/standardTestCases/papi_preemptible_and_max_retries.test
@@ -1,6 +1,6 @@
 name: papi_preemptible_and_max_retries
 testFormat: workflowfailure
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: papi_preemptible_and_max_retries/papi_preemptible_and_max_retries.wdl
diff --git a/centaur/src/main/resources/standardTestCases/papi_v2_log.test b/centaur/src/main/resources/standardTestCases/papi_v2_log.test
index a22bc3eee0c..cf9b33b2c11 100644
--- a/centaur/src/main/resources/standardTestCases/papi_v2_log.test
+++ b/centaur/src/main/resources/standardTestCases/papi_v2_log.test
@@ -1,6 +1,6 @@
 name: papi_v2_log
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: papi_v2_log/papi_v2_log.wdl
diff --git a/centaur/src/main/resources/standardTestCases/papi_v2_plain_detritus.test b/centaur/src/main/resources/standardTestCases/papi_v2_plain_detritus.test
index 2c0346c6a5f..61fe4e3a8a2 100644
--- a/centaur/src/main/resources/standardTestCases/papi_v2_plain_detritus.test
+++ b/centaur/src/main/resources/standardTestCases/papi_v2_plain_detritus.test
@@ -1,6 +1,6 @@
 name: papi_v2_plain_detritus
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: papi_v2_plain_detritus/papi_v2_plain_detritus.wdl
diff --git a/centaur/src/main/resources/standardTestCases/parallel_composite_uploads_off_by_default.test b/centaur/src/main/resources/standardTestCases/parallel_composite_uploads_off_by_default.test
index 270852fa02b..61c0a293dde 100644
--- a/centaur/src/main/resources/standardTestCases/parallel_composite_uploads_off_by_default.test
+++ b/centaur/src/main/resources/standardTestCases/parallel_composite_uploads_off_by_default.test
@@ -3,7 +3,7 @@
 
 name: parallel_composite_uploads_off_by_default
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: parallel_composite_uploads/parallel_composite_uploads_off.wdl
diff --git a/centaur/src/main/resources/standardTestCases/preemptible_and_memory_retry.test b/centaur/src/main/resources/standardTestCases/preemptible_and_memory_retry.test
index de917b8a37f..ca36fd4e12a 100644
--- a/centaur/src/main/resources/standardTestCases/preemptible_and_memory_retry.test
+++ b/centaur/src/main/resources/standardTestCases/preemptible_and_memory_retry.test
@@ -1,6 +1,6 @@
 name: preemptible_and_memory_retry
 testFormat: workflowfailure
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: retry_with_more_memory/preemptible_and_memory_retry.wdl
diff --git a/centaur/src/main/resources/standardTestCases/quota_fail_retry.test b/centaur/src/main/resources/standardTestCases/quota_fail_retry.test
index b518384fb57..36e9565bb84 100644
--- a/centaur/src/main/resources/standardTestCases/quota_fail_retry.test
+++ b/centaur/src/main/resources/standardTestCases/quota_fail_retry.test
@@ -1,6 +1,6 @@
 name: quota_fail_retry
 testFormat: workflowfailure
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: quota_fail_retry/quota_fail_retry.wdl
diff --git a/centaur/src/main/resources/standardTestCases/requester_pays_engine_functions_negative.test b/centaur/src/main/resources/standardTestCases/requester_pays_engine_functions_negative.test
index f6f3c4ead2d..8934c7ff9a8 100644
--- a/centaur/src/main/resources/standardTestCases/requester_pays_engine_functions_negative.test
+++ b/centaur/src/main/resources/standardTestCases/requester_pays_engine_functions_negative.test
@@ -1,7 +1,7 @@
 name: requester_pays_engine_functions_negative
 testFormat: workflowfailure
 # Papiv2 backend configured SA does not have permission to bill the project, so this workflow should fail
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 workflowType: WDL
 workflowTypeVersion: 1.0
 tags: ["wdl_1.0"]
diff --git a/centaur/src/main/resources/standardTestCases/requester_pays_localization_negative.test b/centaur/src/main/resources/standardTestCases/requester_pays_localization_negative.test
index 6b22acc1c27..6a676e2b241 100644
--- a/centaur/src/main/resources/standardTestCases/requester_pays_localization_negative.test
+++ b/centaur/src/main/resources/standardTestCases/requester_pays_localization_negative.test
@@ -1,7 +1,7 @@
 name: requester_pays_localization_negative
 testFormat: workflowfailure
 # Papiv2 backend configured SA does not have permission to bill the project, so this workflow should fail
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 workflowType: WDL
 workflowTypeVersion: 1.0
 tags: ["wdl_1.0"]
diff --git a/centaur/src/main/resources/standardTestCases/restart.restart_jes_with_recover.test b/centaur/src/main/resources/standardTestCases/restart.restart_jes_with_recover.test
index 6376257e690..1d8c61e1802 100644
--- a/centaur/src/main/resources/standardTestCases/restart.restart_jes_with_recover.test
+++ b/centaur/src/main/resources/standardTestCases/restart.restart_jes_with_recover.test
@@ -1,7 +1,7 @@
 name: restart_jes_with_recover
 testFormat: CromwellRestartWithRecover
 callMark: cromwell_restart.cromwell_killer
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: cromwell_restart/cromwell_restart.wdl
diff --git a/centaur/src/main/resources/standardTestCases/retry_same_memory_output_failure.test b/centaur/src/main/resources/standardTestCases/retry_same_memory_output_failure.test
index e91b19ef47f..a2991ca1ccf 100644
--- a/centaur/src/main/resources/standardTestCases/retry_same_memory_output_failure.test
+++ b/centaur/src/main/resources/standardTestCases/retry_same_memory_output_failure.test
@@ -1,6 +1,6 @@
 name: retry_same_memory_output_failure
 testFormat: workflowfailure
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: retry_with_more_memory/retry_same_memory_output_failure.wdl
diff --git a/centaur/src/main/resources/standardTestCases/retry_with_more_memory.test b/centaur/src/main/resources/standardTestCases/retry_with_more_memory.test
index dbf2d53d394..008fe1b932d 100644
--- a/centaur/src/main/resources/standardTestCases/retry_with_more_memory.test
+++ b/centaur/src/main/resources/standardTestCases/retry_with_more_memory.test
@@ -1,6 +1,6 @@
 name: retry_with_more_memory
 testFormat: workflowfailure
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: retry_with_more_memory/retry_with_more_memory.wdl
diff --git a/centaur/src/main/resources/standardTestCases/retry_with_more_memory_after_137.test b/centaur/src/main/resources/standardTestCases/retry_with_more_memory_after_137.test
index 07ac373951e..a69290ca511 100644
--- a/centaur/src/main/resources/standardTestCases/retry_with_more_memory_after_137.test
+++ b/centaur/src/main/resources/standardTestCases/retry_with_more_memory_after_137.test
@@ -1,6 +1,6 @@
 name: retry_with_more_memory_after_137
 testFormat: workflowfailure
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: retry_with_more_memory/retry_with_more_memory_after_137.wdl
diff --git a/centaur/src/main/resources/standardTestCases/retry_with_more_memory_no_wf_option.test b/centaur/src/main/resources/standardTestCases/retry_with_more_memory_no_wf_option.test
index dcf0625741c..fde288b5c4f 100644
--- a/centaur/src/main/resources/standardTestCases/retry_with_more_memory_no_wf_option.test
+++ b/centaur/src/main/resources/standardTestCases/retry_with_more_memory_no_wf_option.test
@@ -1,6 +1,6 @@
 name: retry_with_more_memory_no_wf_option
 testFormat: workflowfailure
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: retry_with_more_memory/retry_with_more_memory.wdl
diff --git a/centaur/src/main/resources/standardTestCases/scatter_delete.test b/centaur/src/main/resources/standardTestCases/scatter_delete.test
index 827b3533840..bead9340070 100644
--- a/centaur/src/main/resources/standardTestCases/scatter_delete.test
+++ b/centaur/src/main/resources/standardTestCases/scatter_delete.test
@@ -2,7 +2,7 @@
 
 name: scatter_delete
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: delete_intermediates/scatter_delete.wdl
diff --git a/centaur/src/main/resources/standardTestCases/scatter_simples_prepare_scatter_gather_papi.test b/centaur/src/main/resources/standardTestCases/scatter_simples_prepare_scatter_gather_papi.test
index 962c8bcfbc3..027c1eec096 100644
--- a/centaur/src/main/resources/standardTestCases/scatter_simples_prepare_scatter_gather_papi.test
+++ b/centaur/src/main/resources/standardTestCases/scatter_simples_prepare_scatter_gather_papi.test
@@ -1,6 +1,6 @@
 name: prepare_scatter_gather_papi
 testFormat: workflowsuccess
-backends: [Papi, GCPBATCH]
+backends: [Papi]
 
 files {
   workflow: scatter_simples/prepare_scatter_gather.wdl
diff --git a/centaur/src/main/resources/standardTestCases/ssh_access.test b/centaur/src/main/resources/standardTestCases/ssh_access.test
index f0922ea36f2..f8b3d799f6f 100644
--- a/centaur/src/main/resources/standardTestCases/ssh_access.test
+++ b/centaur/src/main/resources/standardTestCases/ssh_access.test
@@ -1,6 +1,6 @@
 name: ssh_access
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 # CROM-6872: disabling this test because it is consistently failing in our test infrastructure. This
 #   is a community-contributed feature that is not officially supported by the Cromwell development
 #   team at the Broad Institute.
diff --git a/centaur/src/main/resources/standardTestCases/stdout_delete.test b/centaur/src/main/resources/standardTestCases/stdout_delete.test
index b08a8cb08be..ef7f3a079b0 100644
--- a/centaur/src/main/resources/standardTestCases/stdout_delete.test
+++ b/centaur/src/main/resources/standardTestCases/stdout_delete.test
@@ -2,7 +2,7 @@
 
 name: stdout_delete
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: delete_intermediates/stdout_delete.wdl
diff --git a/centaur/src/main/resources/standardTestCases/sub_workflow_delete.test b/centaur/src/main/resources/standardTestCases/sub_workflow_delete.test
index 5d0b63af3ae..18f50daabb7 100644
--- a/centaur/src/main/resources/standardTestCases/sub_workflow_delete.test
+++ b/centaur/src/main/resources/standardTestCases/sub_workflow_delete.test
@@ -2,7 +2,7 @@
 
 name: sub_workflow_delete
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: delete_intermediates/sub_workflow_delete.wdl
diff --git a/centaur/src/main/resources/standardTestCases/use_cacheCopy_dir.test b/centaur/src/main/resources/standardTestCases/use_cacheCopy_dir.test
index 84a21923136..1b33b90fe22 100644
--- a/centaur/src/main/resources/standardTestCases/use_cacheCopy_dir.test
+++ b/centaur/src/main/resources/standardTestCases/use_cacheCopy_dir.test
@@ -1,6 +1,6 @@
 name: use_cache_copy_dir
 testFormat: runtwiceexpectingcallcaching
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: use_cacheCopy_dir/use_cacheCopy_dir.wdl
diff --git a/centaur/src/main/resources/standardTestCases/wdl_optional_outputs.test b/centaur/src/main/resources/standardTestCases/wdl_optional_outputs.test
index cc5ef2723d4..6ab6b498290 100644
--- a/centaur/src/main/resources/standardTestCases/wdl_optional_outputs.test
+++ b/centaur/src/main/resources/standardTestCases/wdl_optional_outputs.test
@@ -1,6 +1,6 @@
 name: wdl_optional_outputs
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: wdl_optional_outputs/wdl_optional_outputs.wdl
diff --git a/centaur/src/main/resources/standardTestCases/wdl_optional_outputs_call_caching.test b/centaur/src/main/resources/standardTestCases/wdl_optional_outputs_call_caching.test
index 50419c07704..5a982fc2f03 100644
--- a/centaur/src/main/resources/standardTestCases/wdl_optional_outputs_call_caching.test
+++ b/centaur/src/main/resources/standardTestCases/wdl_optional_outputs_call_caching.test
@@ -1,6 +1,6 @@
 name: wdl_optional_outputs_call_caching
 testFormat: runtwiceexpectingcallcaching
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 # CROM-6807 Don't retry failures, subsequent runs will fail because of unexpected cache hits from the initial run
 retryTestFailures: false
diff --git a/centaur/src/main/resources/standardTestCases/wdl_optional_outputs_draft2.test b/centaur/src/main/resources/standardTestCases/wdl_optional_outputs_draft2.test
index 74810ee4535..909e87aee40 100644
--- a/centaur/src/main/resources/standardTestCases/wdl_optional_outputs_draft2.test
+++ b/centaur/src/main/resources/standardTestCases/wdl_optional_outputs_draft2.test
@@ -1,6 +1,6 @@
 name: wdl_optional_outputs_draft2
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: wdl_optional_outputs_draft2/wdl_optional_outputs_draft2.wdl
diff --git a/centaur/src/main/resources/standardTestCases/wdl_optional_outputs_unsupported.test b/centaur/src/main/resources/standardTestCases/wdl_optional_outputs_unsupported.test
index 619cc19d7a2..d5792b85e59 100644
--- a/centaur/src/main/resources/standardTestCases/wdl_optional_outputs_unsupported.test
+++ b/centaur/src/main/resources/standardTestCases/wdl_optional_outputs_unsupported.test
@@ -1,6 +1,6 @@
 name: wdl_optional_outputs_unsupported
 testFormat: workflowfailure
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: wdl_optional_outputs/wdl_optional_outputs_unsupported.wdl
diff --git a/centaur/src/main/resources/standardTestCases/wdl_optional_outputs_unsupported_draft2.test b/centaur/src/main/resources/standardTestCases/wdl_optional_outputs_unsupported_draft2.test
index 7e3afab29c0..84802d4e12e 100644
--- a/centaur/src/main/resources/standardTestCases/wdl_optional_outputs_unsupported_draft2.test
+++ b/centaur/src/main/resources/standardTestCases/wdl_optional_outputs_unsupported_draft2.test
@@ -1,6 +1,6 @@
 name: wdl_optional_outputs_unsupported_draft2
 testFormat: workflowfailure
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: wdl_optional_outputs_draft2/wdl_optional_outputs_unsupported_draft2.wdl
diff --git a/centaur/src/main/resources/standardTestCases/workbench_health_monitor_check_papiv2.test b/centaur/src/main/resources/standardTestCases/workbench_health_monitor_check_papiv2.test
index 78aeabfe8b6..11b42d1ab61 100644
--- a/centaur/src/main/resources/standardTestCases/workbench_health_monitor_check_papiv2.test
+++ b/centaur/src/main/resources/standardTestCases/workbench_health_monitor_check_papiv2.test
@@ -1,6 +1,6 @@
 name: workbench_health_monitor_check_papiv2
 testFormat: workflowsuccess
-backends: [Papiv2, GCPBATCH]
+backends: [Papiv2]
 
 files {
   workflow: workbench_health_monitor_check/workbench_health_monitor_check.wdl