Fight continue with a new invoke battle

You've got to be careful with Zone Doctor.  Whenever you insert or delete a line from it, the program tries to dynamically update EVERY pointer in the game.  Unfortunately, this causes it to scrub all of the banks from the pointers (so if it was originally pointing to CC/334A, for example, it instead points to CA/334A).  This WILL break your game, which is why you want to use Zone Doctor to set up a layout, then manually change the hex in a separate copy of the ROM.

Oh my friend, Zone Doctor is FAR worse than that. If you open a rom and click "save", even without making any edits, it will irreversibly corrupt the event pointers for the final room of Kefka's layer (aka the Final Battle) and the Colosseum. From the moment you click save, your game will be un-completable, but you won't know until you hit the final room in your playthrough. It's pernicious.
Here's what I do: I use Zone Doctor's event editor to get the event the way I want it, then hand-copy the hex (which you can find on the bottom bar in Zone Doctor) via HxD. It takes a few minutes, but it's worth it.