Refering to the XP-80

Hello, when I insert measures in the middle of track data and cannot undo, how do I selected a certain area of data (notes) and move them back to a certain position before. Do I use delete to do this?

Furthermore, when I copy a track 1 into track 2, I also get its part of the performance, which I don't want but only the notes. So when I play channel 2, it actually plays channel 1 part as well. How do I get only the notes but not the part? Thanks in advance...