diff --git a/src/ds/d400/d400-device.cpp b/src/ds/d400/d400-device.cpp
index 8e43e1b1a67..3e58700d2b0 100644
--- a/src/ds/d400/d400-device.cpp
+++ b/src/ds/d400/d400-device.cpp
@@ -187,10 +187,6 @@ namespace librealsense
 
                 synthetic_sensor::open(requests);
 
-                // needed in order to restore the HDR sub-preset when streaming is turned off and on
-                if (_hdr_cfg && _hdr_cfg->is_enabled())
-                    get_option(RS2_OPTION_HDR_ENABLED).set(1.f);
-
                 // Activate Thermal Compensation tracking
                 if (supports_option(RS2_OPTION_THERMAL_COMPENSATION))
                     _owner->_thermal_monitor->update(true);
diff --git a/src/ds/ds-options.cpp b/src/ds/ds-options.cpp
index d70ef6c3543..e7a351b747a 100644
--- a/src/ds/ds-options.cpp
+++ b/src/ds/ds-options.cpp
@@ -617,6 +617,10 @@ namespace librealsense
         else
         {
             if (_hdr_cfg->is_enabled())
+                /*throw wrong_api_call_sequence_exception(
+                    rsutils::string::from() << "The control - " << _uvc_option->get_description()
+                                    << " - is locked while HDR mode is active.");*/
+
                 LOG_WARNING("The control - " << _uvc_option->get_description()
                      << " - is locked while HDR mode is active.\n"); 
             else
diff --git a/src/hdr-config.cpp b/src/hdr-config.cpp
index bc82809f7f0..821d413c18f 100644
--- a/src/hdr-config.cpp
+++ b/src/hdr-config.cpp
@@ -15,7 +15,6 @@ namespace librealsense
         _sensor(depth_ep),
         _is_enabled(false),
         _is_config_in_process(false),
-        _has_config_changed(false),
         _current_hdr_sequence_index(DEFAULT_CURRENT_HDR_SEQUENCE_INDEX),
         _auto_exposure_to_be_restored(false),
         _emitter_on_off_to_be_restored(false),
@@ -215,12 +214,6 @@ namespace librealsense
         default:
             throw invalid_value_exception("option is not an HDR option");
         }
-
-        // subpreset configuration change is immediately sent to firmware if HDR is already running
-        if (_is_enabled && _has_config_changed)
-        {
-            send_sub_preset_to_fw();
-        }
     }
 
     bool hdr_config::is_config_in_process() const
@@ -280,8 +273,14 @@ namespace librealsense
                         }
                     }
 
-                    _is_enabled = send_sub_preset_to_fw();
-                    _has_config_changed = false;
+                    std::vector<byte> response;
+                    send_sub_preset_to_fw();
+                    _is_enabled = is_hdr_enabled_in_device(response);
+                    configure_hdr_as_in_fw(response);
+                }
+                else
+                {
+                    LOG_WARNING("HDR: re-enablement not supported. Disable HDR first and then try enabling again." );
                 }
             }
             else
@@ -504,15 +503,29 @@ namespace librealsense
 
     void hdr_config::set_exposure(float value)
     {
-        _hdr_sequence_params[_current_hdr_sequence_index]._exposure = value;
-        _has_config_changed = true;
+        std::vector<byte> res;
+        _is_enabled = is_hdr_enabled_in_device(res);
+        if (!_is_enabled)
+            _hdr_sequence_params[_current_hdr_sequence_index]._exposure = value;
+        else
+            /*throw wrong_api_call_sequence_exception(
+                rsutils::string::from() << "hdr_config::set_exposure(...) failed! Cannot update HDR when it is already enabled." );*/
+            LOG_WARNING("hdr_config::set_exposure(...) failed! Cannot update HDR when it is already enabled.\n"); 
     }
 
     void hdr_config::set_gain(float value)
     {
-        _hdr_sequence_params[_current_hdr_sequence_index]._gain = value;
-        _has_config_changed = true;
-    }
+        std::vector<byte> res;
+        _is_enabled = is_hdr_enabled_in_device(res);
+        if (!_is_enabled)
+        {
+            _hdr_sequence_params[_current_hdr_sequence_index]._gain = value;
+        }
+        else
+            /*throw invalid_value_exception(
+                rsutils::string::from() << "hdr_config::set_gain(...) failed! Cannot update HDR when it is already enabled." );*/
+            LOG_WARNING("hdr_config::set_gain(...) failed! Cannot update HDR when it is already enabled.\n"); 
+}
 
 
     hdr_params::hdr_params() :
diff --git a/src/hdr-config.h b/src/hdr-config.h
index 25309012cc9..a54ff524d46 100644
--- a/src/hdr-config.h
+++ b/src/hdr-config.h
@@ -79,7 +79,6 @@ namespace librealsense
         int _current_hdr_sequence_index;
         mutable bool _is_enabled;
         bool _is_config_in_process;
-        bool _has_config_changed;
         bool _auto_exposure_to_be_restored;
         bool _emitter_on_off_to_be_restored;
         hw_monitor& _hwm;