diff --git a/invokeai/app/services/config/config_default.py b/invokeai/app/services/config/config_default.py
index fd224fb74e..38e79bc2b4 100644
--- a/invokeai/app/services/config/config_default.py
+++ b/invokeai/app/services/config/config_default.py
@@ -190,7 +190,10 @@ class InvokeAIAppConfig(BaseSettings):
             new_config = config
 
         for field_name in new_config.model_fields_set:
-            setattr(self, field_name, getattr(new_config, field_name))
+            new_value = getattr(new_config, field_name)
+            current_value = getattr(self, field_name)
+            if new_value != current_value:
+                setattr(self, field_name, new_value)
 
     def write_file(self, exclude_defaults: bool) -> None:
         """Write the current configuration to the `invokeai.yaml` file. This will overwrite the existing file.