Netbackup 5.0 Solaris 8

I have a set of backup tapes which are created over a weekend.

I know the list of tapes used and want to copy them

Is the best way to use bpduplicate and identify the images and duplicate 
them, hoping then that it picks all the tapes i have listed ( it should )
Or is there a way to just copy the tapes tape for tape exactly?

Any ideas?

Cheers