Hi @DarfNader,
I didn’t see this post until this morning, but it looks like you got everything sorted out.
As you saw, if the folders are named the exact same name then they should merge appropriately, but it can be easy to hit an error with a slight name difference. I’ve done this myself.
I think this is the post you were referring to for a Time Machine backup, so I will link it here in case anyone else hits this:
Great to hear! That was definitely one that hd me scratching my head.