[LE] Can't alter Additional Races section for ArmorAddon

[LordRevonworc]

So, I recently installed a mod that added a bunch of races to Skyrim (Zebsirius), but I discovered that when a Zebsirius Lilmothiit (fox-person race) gets decapitated, the decapitated head object uses the model for the Khajiit's head, rather than the newly added model for the Lilmothiit head. As a result, when a Lilmothiit gets decapitated, the body just looks wrong afterwards.

 

I was going to fix this myself by creating my own ArmorAddon item specifically for the new Lilmothiit race, but that's when I encountered this issue. Simply put, when I try to alter anything in the "Additional Races" section of the ArmorAddon window, the creation kit doesn't recognize that as being a change and thus doesn't save it. I can't remove the Lilmothiit races from the Khajiit version of the ArmorAddon, I can't remove the Khajiit races when I copy the Khajiit version of the ArmorAddon, I can't add the Lilmothiit races when I create a new ArmorAddon from scratch, and when I change the main Race option, it just wipes out the Additional Races selection entirely and I can't add anything more.

 

Am I doing something wrong, or is this just a problem with the Creation Kit, and does anyone know how I might be able to fix this problem?