I’ve just downloaded your Stat / Class Expansion FE6 & FE7. Haven’t tried it since the installing process looks like a lot 
so I will try it at a different time. But will definitely let you know if it works
How are you editing animations? Are you using nightmare? I think you should use febuilder.
If you must use ea, I have an installer that adds 60ish class animations here:
https://github.com/Veslyquix/SRR_FEGBA/tree/main/gfx/Anims
But I think you’re unlikely to find it helpful.
I use febuilder, but I read a post that guide me to add custom animations like that so I just follow it. Go to tools → patches → type “custom animation” and you will see Character Custom Animation by EA Table Editor. Install it → from there just assign your unit to the “anime” that you want to use for that unit. I’ve always done it like that for FE8. I don’t know what EA means 