Identifying the MML used for a particular backup set

Is there any way to determine from the RMAN catalog what MML was used to create a backup set? We are in the process of switching from TDPO to Net Backup and have both sets of libraries installed. Some of my DBID's have changed over time due to RMAN duplications and this has caused some backup sets to be abandoned in the catalog. I'd like to come up with a way to correctly determine which libobk library I should be using to delete a particular backup set. TIA Received on Fri Jun 20 2008 - 09:06:11 CDT