So, a week ago, my Wind and Mirror dragons' Aurora move, a move I trained them to gain a year + ago, now are called Electro Ball, despite the fact I never trained them for the move. And my Crystal dragon's Nova attack is now called Telsa Ray, once again without ever training for that particular move. All three have been at lv. 20 for a year and haven't gained any further levels. The attack animations are still the same as Aurora/Nova, as are the attack typings.