diff --git a/catalystwan/tests/config_migration/policy_converters/test_references_updater.py b/catalystwan/tests/config_migration/policy_converters/test_references_updater.py
index 9dc32611..bf196a92 100644
--- a/catalystwan/tests/config_migration/policy_converters/test_references_updater.py
+++ b/catalystwan/tests/config_migration/policy_converters/test_references_updater.py
@@ -57,4 +57,4 @@ def test_not_update_parcel_references(self):
 
         updated_parcel = update_parcel_references(aip_parcel, pushed_objects)
 
-        assert updated_parcel is aip_parcel
+        assert updated_parcel.model_dump_json() == aip_parcel.model_dump_json()
diff --git a/catalystwan/utils/config_migration/creators/references_updater.py b/catalystwan/utils/config_migration/creators/references_updater.py
index 940246b6..34759386 100644
--- a/catalystwan/utils/config_migration/creators/references_updater.py
+++ b/catalystwan/utils/config_migration/creators/references_updater.py
@@ -10,6 +10,11 @@
 
 
 def update_parcel_references(parcel: T, uuid_map: Dict[UUID, UUID]) -> T:
+    """
+    Replaces UUID strings found in json dump based on provided map
+    always returns a copy of original even when there was no substitution
+    always perform output validation
+    """
     target_dump = parcel.model_dump_json(by_alias=True)
     pattern = '"{}"'