Bones (bone3) deactivate all other bones (bone3) when deleted.
Some demo videos.
https://user-images.githubusercontent.com/3782245/175795873-b2a607bb-d87c-451a-9319-a1375e0cb84e.mp4
https://user-images.githubusercontent.com/3782245/175795875-eca0a35e-421f-4ae3-bf57-d2542e31af78.mp4
https://user-images.githubusercontent.com/3782245/175795931-cf909a2a-fc92-42e5-abf4-4fc8b19e81f7.mp4
bones' reactivation requires an outfit rewear, or a bone being unhidden either by the hide tickbox or by an event input. It seems related to the whole skeleton's (a player or a pac model) updating rather than individual pac parts.
I guess the first and second video are redundant, both being head bones. But I was testing to see if there was an influence between cloning the bone part and making a new bone part.
can't reproduce on develop