I want to delete all animation data in an FE7/8 rom

How do I go about doing this? My goal is to then insert a crapload of animations and dump them with FEditor so I can insert them en-masse into FEXNA.

If you don’t want to overwrite the current animations…
You can scroll through GBAGE until you find animation frames. Take note of the beginning offset of the frames and when they end.
Go into HxD and delete everything in between those offsets. When I say delete, don’t hit backspace. There’s a command somewhere that allows you to replace all bytes with 0s. Do that.
Naturally, if the frames suddenly jump to an offset 1000 bytes away from the previous frames, don’t delete everything in between.
Make a backup before you do this. I’ve never tried this, but I think it should work if you want the animation frames completely gone.