Hi Larry H,
The way I re work a song recorded on the KN3000 for playing on the Kn7000 is this:
I record whatever rhythm patterns I used with the KN3000 into the Memory of the KN3000 and then save it on a floppy.
I then play the song on the KN7000 and change the sounds to whatever I feel fits and sounds the way I want it to.
This could be picking different instruments, changing octaves, or anything else I feel helps. I know that if I recorded a track with technichord on the KN3000 it will only play on the KN7000 as a single note. I then re-record the passage on the KN7000 using the technichord feature if that is my current desire.
I then save the song on the IN7000 so that it will play as a KN7 song recording.
Hope this helps at least a little.
Larry G