Well, one thing to keep in mind is that whatever scripts you're using now will have to be updated... there is a huge amount of data changed from UBB6 to UBB7 (reguardless of what you came from, ubb.classic or ubb.threads); this is especially important when we're talking post UBB.Threads 7.3 with the new permission matrix (makes it so even mods made for UBB.T7 had to be recreated)
