Got a feeling the answers gonna be no but, can you change the characters skeleton without having create a new character to attach it to and copying the characters blueprint and animation blueprint.
Hi, if you change your skeletal mesh it does not matter for your blueprint unless you’ve used some socket/bone names that only exist on this skeleton (you can solve this problem by saving the socket/bone names you want to use into variables and then use those variables instead of manually typing in the names).
The animation blueprint is per skeleton though. So if you would use a different skeletal mesh that also uses a different skeleton, then you would need a new animation blueprint.
You.can force an update by mass retargeting. But otherwise the general answer is indeed No.