I might suggest that a client who is this particular also has a routine that assures compliance. Maybe they have a script that can do this once the DXF is opened in their system.
As for the default names, what about renaming them to one that is used? If nothing else, you could just remove these lines from the DXF file. You will likely need Autocad to confirm your output files. If you simply import it back to Creo, you might just get more "artifacts" than the file brings in.