Moving all posts into parent category and converting to forum

Wow, I would have thought there would have been a facility to do this in XF. Obviously not!

Anyways, that part I can probably figure out, but I can't move threads to a category (only to a forum), and it seems that categories cannot be converted to forums. So, is the best way of doing this recreating the same forum name and then running the queries? This is going to get very messy and confusing :(