I inserted my PBR Surf Pikachu wondercard into my Platinum save file, picked it up at the store, saved, dumped a PKM file, and then repeated the process with my original save three times and gotten the following:
As you can see, the PID is the same every time and the IVs change. All three report as legal--which they should, since I didn't modify them.
My objective, though, is to edit some more favorable IVs on this "Mystery Gift (Static)" pokemon. Pokegen's PID calculator obviously gives me a different number every time I change IVs.
So can I just edit IVs willy-nilly and leave the PID (433683475) and nature (Hardy) as they are? Thanks, y'all.