Not copy edocument messages to new records.

This commit refs #24307


(cherry picked from commit 7a275d51d6)

edocument.py

@@ -115,6 +115,15 @@ class EdocumentMixin(object):
     def get_edi_message(self, name=None):
         return self.messages[-1].rec_name if self.messages else ''
 
+    @classmethod
+    def copy(cls, records, default=None):
+        if default is None:
+            default = {}
+        else:
+            default = default.copy()
+        default['messages'] = None
+        return super().copy(records, default=default)
+
 
 class EdocumentImportMixin(EdocumentMixin):