We have decided to move the copypool copies of a bunch of large nodes, to
an LTO pool vs the current 3590E pool, to reduce offsite storage (our own
vault - not a "vaulting company")

I've tried a MOVE DATA but get the error that I can't do that.

Short of doing the copies again, and then DELETE VOLUME xxxxxx
DISCARDDATA=YES, is there a better way to accomplish this ?  The originals
are on 50-LTO2 volumes, so this would take a long, long time.