Can't restore from an expired backup set
I need to restore from a backup set that expired and was overwritten about a month ago (using Backup Exec 2012). I had another copy of the backup, so I copied the files back into the backup-to-disk folder, then I did an inventory. It didn't seem to find anything, so I did an inventory and catalog, then the backup set I needed showed up in the list of sets on the device.
I thought that was great, so I clicked over to start a restore. When I went to search for the files, that date didn't show up, so I went back to Storage and the Backup sets had disappeared again. I checked the folder, and they had been deleted.
Can someone explain why they were deleted and how I need to do this so that I can find the files I need? Do I need to write protect the files after I copy them back to the backup-to-disk folder before I run the Inventory & Catalog?
Please help! Thanks!