Hi Mark,

I think this will work but I don't have my keyboard out to try it.

Copy the composer to a Custom Rhythm. Then you should be able to copy individual variation or its components from the Custom Rhythm back to a different Composer.

Composer > Pattern Copy (Make sure you select something other than "ALL" because that will just copy the entire Rhythm).

I can get my KN7000 out later or tomorrow to look into it further if you're stuck.

Best wishes,
Mike