How to restore from tapes with Storage Lifecycle policy?

Hi,

NetBackup 7.0.1 on solaris 10

I have a storage lifecycle policy that backs up first to VTL and then do duplication to the tape library. Now I need to test a SOX restore which requires to restore from tapes. However, since the VTL still has the backups, Symantec backup and restore seems to only give me the option to restore from VTL. How do I tell it to restore from tapes?

Thanks!