First off, this was the easiest and quickest software merge I've ever done, congrats on that XF, you did well
But for the bugs or issues, I hate to call things "bugs" unless they are officially designated as one...
- Avatars did not transfer over, I didn't have a custom folder for the avatar/attachment deal either, it was all default SMF
- Everyones birthday has been reset to 1900 and I cannot seem to locate the option to allow them to change it? Please advise
- Some permissions from custom user groups did not go over well but that is fine because it was custom on SMF, obviously not XF, wasn't that difficult to fix
- My SMF admin account did not transfer as a super-admin. Not sure if that was supposed to be like that or not. Had to change this by editing the config file, no big deal though.