I've just upgraded to 2012-5, and am impressed with the new MIDI Superstyles.

Playing with other musicians in several combinations, I share BIAB songs I've put together, but not all of my colleagues have the most recent version of BIAB.

Obviously, if they don't have the necessary RealTracks etc., they won't be able to hear the output as I hear it, but I would like to be sure that they can at least create leadsheets (transposed as necessary for their instruments).

Do earlier versions of BIAB deal elegantly with new features that weren't invented when they were released? How far back is it possible to go?