Arcserve 7.0 for Netware

We upgraded from backup software Arcserve 6.0 to Arcserve 7.0. It seems running OK now. However, we seem to lose the old database from Arcserve 6.0 version. We only see Arcserve 7.0 backup media database. How can I get back the backup media database from Arcserve 6.0 to Arcserve 7.0 so that I can restore old tapes data from version 6.0? Thanks