>>283061507
>duplicate shoulder bone
>rename shoulder vertex group to the duplicate
>merge duplicate into parent (chest)
Seems so convoluted
I'd have done it this way:
>vertex weight mix modifier on body
>add shoulder group to chest, mix set all
>delete shoulder vertex group
At least this way you can just copy the modifier and do both shoulders at the same time.
Alternatively don't delete the shoulders at all because there's nothing wrong with them? Why do you even need to fix the custom maid shoulders? You have been bending the elbows, right?