I am using BIAB 2013 and love it. One issue I am having - when I insert bars, to modify the form of a song, say between a bridge and an ending, I might insert 8 bars where the ending was, pushing the ending chords 8 bars further in the song. When I play back, the ending chords along with any holds and pushed I may have entered persist, and I hear the bars I entered overtop of what used to be the ending. I tried deleting the bars and re-enetering the chords again, and tried regenerating the song. Any ideas how I can get the old junk cleared out of those bars and have it play what I entered?