diff --git a/src/openforms/submissions/models/submission.py b/src/openforms/submissions/models/submission.py
index 8592e308c2..1fa6c42d4d 100644
--- a/src/openforms/submissions/models/submission.py
+++ b/src/openforms/submissions/models/submission.py
@@ -2,6 +2,7 @@
 
 import logging
 import uuid
+from copy import deepcopy
 from dataclasses import dataclass
 from typing import TYPE_CHECKING, Any, Mapping
 
@@ -429,9 +430,8 @@ def total_configuration_wrapper(self) -> FormioConfigurationWrapper:
             if len(form_steps) == 0:
                 return FormioConfigurationWrapper(configuration={})
 
-            wrapper = FormioConfigurationWrapper(
-                form_steps[0].form_definition.configuration
-            )
+            begin_configuration = deepcopy(form_steps[0].form_definition.configuration)
+            wrapper = FormioConfigurationWrapper(begin_configuration)
             for form_step in form_steps[1:]:
                 wrapper += form_step.form_definition.configuration_wrapper
             self._total_configuration_wrapper = wrapper