Some IMGR bbcode converts to wiki assets, but others do not.
This is a weird one. All my wiki articles have IMGR bbcode.
For some reason the importer correctly transfers this to wiki assets and even adds FLOAT_RIGHT bbcode. I have no clue why this happens, but I am very happy with it.
But it doesn't happen for all instances of the bbcode. It may happen for the first one, but not for the second without any difference I can find.
Please bug report 300108 on my live site and specifically post 4.