Egg Moves can be remembered in XY only. TM moves from previous generations cannot be relearned, and Move Tutor moves cannot be relearned. Also, if you evolve a Pokemon, it can no longer relearn moves that it can only learn in its previous evolutionary stage. An example of this is Eevee and Sylveon. Sylveon cannot relearn Baton Pass, even if it used to know it, because it can only be learned by Eevee. But Egg Moves CAN be relearned, no matter what evolutionary stage the Pokemon is at.
I have a question branching off of this. I have a Ferrosseed with Stealth Rocks, Spikes, and Leech Seed. I think two of those are Move Tudor (B/W) moves. It says it is from Kalos (Has the mark). I traded for this a while ago.
1. I can't breed down the moves correct?
2. Is this hacked?