Discovered some IMG BBCode that isn't showing up properly after I did the SMF import. I think it's because it includes width and height codes. I tried a few different variations, like putting the values in quotes, but nothing worked other than completely stripping out the width and height attributes--does Xenforo not support them in IMG tags?
Here's an example:
[img width=400 height=266]http://h.fastcompany.net/multisite_files/fastcompany/imagecache/slideshow_large/slideshow/2014/12/3039678-slide-s-6-star-wars-photos-by-thomas-dagg.jpg[/img]
Not sure if this falls within the scope of the importer, or something that manually should be handled by the admin. It's a fairly standard tag...