http://www.pokecharms.com/forums/index.php?topic=4259.0
It's in the Games Discussion sub-board, not in the Doctor's Clinic, which can get slightly confusing.
Also, Natures: http://www.pokecharms.com/forums/index.php?topic=4070.0
So, techinically, yes to your question, but I think it would be better to try and re-breed if possible for competitive battling. Could be wrong, as I don't battle often, if at all.