Idk because game freak are picky about these things :\
it might be cause it was a tm, I'm not allowed to find a quick match with her so that's my only idea why...
No I havent hacked, it's just the gardevoir I have is from generation 3 and knows the gen 4 move trick, which in pokemon black and White is an illegal move for gardevoir to learn
sorry :\
Just a curious question, did you hack something with your pokemons?
'cause when I try to upload the video on global termnal, it won't let me and said there is something wrong with the pokemons?