Views to help manage migration of all images to new library and tapes?

OK, need some help. I'm getting this done, but there has to be a more efficient way.

Windows Server 2008 and 2003 master and Media Servers. Netbackup 7.5.0.4

We are replacing old library and LTO3 w/ new library and all LTO6 stuff. So, for a variety of reasons, we are duplicating everything to the new LTO6 tapes.

So, my task is duplicating, then expiring all copies on the LTO3 tapes (there are two copies of each image: onsite [primary], offsite).

The best process I've come up with is:

1. fill the old library with Onsite tapes (only holds 40).
2. In the "Catalog" in the Netbackup admin console, I search each tape for primary copies.
3. Right click on the resulting images to Duplicate them.

That's all well and good, but I haven't come up with a good way to clean up the old images. And what I have is tedious and time consuming. I need an easy way to search for  images that have successfully duplicated, and find out where their old copies are and expire them. The best I've come up with is as follows, but by the time I do a couple thousand images, this is going to be a ridiculous task:

1. manually keep track of the images that I've duplicated
2. then search "Images on Tape" in the console, and filter by Backup ID.
3. make note of which copies live on which tapes
4. search the Catalog by tape # and copy number for both of the old onsite and offsite copies and expire them.

If I could figure out how to do any of the following, it would help greatly. These will be hard to explain, but I'll do my best:

• ideally, search in the Catalog (so I could easily expire the images when I find them, rather than have to do duplicative searches), and to see all copies of an image, as opposed to having to specify a particular copy in the search.
• Search "Images on Media" or "Images on Tape", but filter by # of copies (i.e. only show images that have more than 2 copies)
• Search "Images on Media" or "Images on Tape", and filter some how to show ALL copies of an image for which any single copy matchest a parameter. For example, if I filtered by Media Density, I still want to be able to see ALL the copies of the images that have even one copy that matches the Media Density parameter.

Suggestions/ideas welcome, regarding the expiration of old images, or even if there's a better way to do this whole migration process. For example, maybe there's a way to tell Netbackup to expire the old copies automatically as part of the duplication?