Don’t have a Rev2 but on the Prophet 08 you can do this - in the Globals there is a Program Copy option. This allows you to copy, for example, layer A from program 23 into layer B in program 61.
If it’s possible on the P08 I am pretty positive it will we possible on the Rev2 - I would check out the Global Parameters section in the manual in case of any doubts.
EDIT - I just looked at the Rev2 manual and couldn’t see anything in there about Program Copy.. I’ll leave it for someone who has a Rev2 to answer properly. Hope it’s possible!