Wolf enhanced with Curse of Afterlife spawns a zombiefied wolf without any enhancement on death, andd respawn zombified with all its enhancements.
Now there are two zombiefied wolves :(

And we can't heal zombiefied pets with classic Weakness and Golden Apple

Version: 1.7.1-1.20.1
Other mod I think being sus: Pet Cemetery (https://www.curseforge.com/minecraft/mc-mods/pet-cemetery)