"The only way we have been able to do backup and restores (at least the only access we have been granted) has been to do the backup in CommVault and restore to another server). "

What happens normally when you restore, does it restore directly to a sql database, or to a file that must then be restored to become a database? One would think there would be a Commvault option to restore a Microsoft Tape Format standard sql BAK file. However, as mentioned above, there is the COPY_ONLY method of making a standard sql backup file without breaking the log chain created by commvault backups.