Esper Graphics

Recently I have been editing FFVI (US Version 1.0 SNES) and have not been able to change a specific esper graphic so the enemy disappears instead of the commanding party (the esper in question is Bahamut, and I am trying to get an enemy to use it)

I succeeded in the enemy using it but it's just a matter of getting the enemy to disappear instead of the party. Should I just try to mess a bit more with the custom animations (using the FF6 Miscellaneous Data Editor) or is the disappearing act part of a separate animation from the attack?