I am having the same issue as in this post: https://www-secure.symantec.com/connect/forums/tape-discrepancies - and not using containers.
The issue is that any tape ejected after our vault job runs that day is not on the return list from NetBackup, but We get everything for that day returned from Iron Mountain.
Example:
On Dec 12th 2012 -
Tapes ejected at time of vault ( 11:00 am )
200014
200301
Tapes that were completed later that day up to Midnight of 12 /12 /2012 and ejected the next day:
201345
234555
200012
NetBackup tells me that the rerun tapes for Dec 12 2012 will be the first two above. However – Iron Mountain reruns all 5 tapes – BECAUSE they all expired on THE DATE of 12 12 2012.
It's a time stamp issue – and I still don't have an answer – VERY frustrating.