It will. It'll interpret the midi notes in the score.If you get weird chords they will be technically correct but may not be pleasing. Those you can change.
Btw also drop the use of biab. I did 10 years ago. Learn RB it does more than biab.The xml file should work the same.
Before you import turn all bb tracks in RB to regular tracks.This should give you the whole song in midi format.Right click on a track in RB and generate any Real track. Forget about styles for RT. Just add 1 track at a time with musicians you want not those dictated by the style.
Sidebar: I'm a pro player playing 4 days a week for 8 months. Then I go into new song mode. I have over300 songs done this way.

John
ESI Gigaport HD+
Lenovo Turion II /4 Gig Ram/ Win7x64 be
15.6" Monitor
"The only Band is a Real Band"
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