I have consistently be able to record BIAB progressions directly into my Digitech JamMan Looper by using the 1/4" Aux Input line from the looper directly into my computer. I set up the looper to Auto Record, hit play in BIAB and then when I get to the end of the phrase/progression that I want, I hit Rec/Play on the looper on the following beat number 1 to create a loop. Sometimes it takes a few passes to get the timing right, but I've created many workable loops this way.

Hope this helps.