Hello, /vp/. I recently picked up this again and started it over to catch the Therian Forme Pokemon again and send them to my Black 2 game, but it's telling me that I can't send them there because that game has received their data before.

Do I have to buy White 2 or should I restart Black 2? I'm thinking of finding a cheap used copy of White 2 if I have to do the former.