The New update bans illegal hacks. A legal hack is when you make a pokemon which is actually possible to breed, like I hacked my Galvantula, but because it is a common set, with a legitimate ability and stats, it passed it as legit, because the system cannot detect it as if states it's from Unova, so the system can't tell if it was genned because it apparently came from a different game. An illegal hack is like a Sturdy Shedinja or a Hoopa, which is impossible to breed up in the game.
FC: 0430 8750 1984 (Friend Safari: Grass, Oddish, Petilil, Maractus) I don't like Helix.