NX CAM has the 'NC Assistant'. One of the analysis tools is 'Draft' and you can save colors on exit. I ran 'NC assistant > Draft' on a model, then exported as a parasolid and that worked.
I think you just need to regenerate your ops and save. When using 'Create IPW' in 2d Verify, NX creates an IPW for each selected operation and won't clear it out until you regenerate the ops.