A problem in pattern mode I just found that is new to me and sucks if you get caught out.
Was working on a 8 bar pattern, then start concentrating on a 2 bar section, and since you cant change loop times in pattern mode, I set the pattern length (in pattern parameters) to be 2 bars so it loops the small section. The other 6 bars is still there, and I change back and forth as I go along.
Save the project, the full 8 bars is still there, but I was still looping the 2 bars when I turn the machine off. When I turn it on today the other 6 bars are
erased. 