Actually it is a pretty easy process.
Make sure that you TAPEDEV and LTAPEDEV point to the right tape drives,
Recreate al of the dbspaces and chunks, exactly like they are on the server you going to restore from, and you are good to go.
ontape -r
Cheers
Artem
I did this a while ago, so might be forgetting something,
but in a nutshell this is it