I think I may have found the answer to my own question......

http://www.pgmusic.com/techfaq35.htm#5

Quote:
Note: The only tracks that are completely editable by the user are the Melody and Soloist tracks. You can input any notation that you want on either of these tracks. The other tracks (Bass, Drums, Piano, Guitar, Strings) are used by Band-in-a-Box to generate its arrangements. Each time you press Play, Band-in-a-Box will generate a slightly different arrangement on these tracks (to simulate live playing) so that if you make any changes on these tracks, your edits will be lost. If you would like to edit these tracks, you need to copy them to the Melody or Soloist track (Edit | Copy/Move Tracks) or save your song as a MIDI file and do the editing in a MIDI sequencer such as PowerTracks Pro Audio.

Last edited by dan2004; 02/24/15 06:23 PM.