no erasing needed.

If you want to play right hand to an easy record sequence just turn off R1, and/or R2 if it has been used, before you start the sequence.

If you want to play left hand too, turn off apc and/or L if it has been used.

If the correct technichord orchestrator has been used and you don't want technichord turn off part 4.

You can't play track 15 live, unless while looking at the mixer, but can copy R1 out to track 15 and then reassign to leave R1 free for live play; this was described in detail step by step in the 'How Do I' book.

You can assign technichord to track 15 if you wish in the orchestrator.

All you need is panel memories used correctly and the control track. This is how I arrange my work so that I can still play if I have a 7k with no pedals plugged in for panel increment and I can't use the control bank of the pads for panel increment because I've recorded pads to use in the song.