Yeah the converter tool isn’t working for me either. I just get starting conversion, rows of “no X to convert” and eventually it finishes, having done nothing. No errors come out so I don’t know how to test if I’ve entered the incorrect info or what. Any help?
Found the add-on “Post Types Order” and oddly enough, even though it’s supposed to be used for re-ordering custom forms/posts and what not, somehow after installing it, the “Order” forum attributes are actually being recognized as sort orders for the forum index. So problem solved! I’d have just deleted my post rather than write out this reply but I don’t think you can, so just wanted to follow-up that the problem is solved.