the only pokemon i got trouble with was a dunsparce from Soul Silver. I know it wasn't hacked or anything because i caught it in the wild, no cheats or anything involved. it occured to me the problem might be it's nickname (Li'l Wing) which was unfortunate because being from SS i couldn't change it in a Gen V game, and i couldn't get him back. i had to use pokemon editing software to change the nickname, and after only deleting the apostrophe the poketransporter accepted it.
it was weird because other pokes with nicknames were just changed by the bank, i still don't know why it didn't work with that one
it was weird because other pokes with nicknames were just changed by the bank, i still don't know why it didn't work with that one