I have a project I'm just starting up with a limited track count at the moment: 1 audio, 4 midi with associated synths. I wanted to extend the piece from 36 to 72 bars, so I selected all the tracks, copied them, then tried to paste (after specifying in "paste special" which track to start with) at the current end of the piece. Three tries, no luck. I then copied and pasted each track individually; no problem. Why doesn't the multi-track copy and paste work?