Eric,

Since you are using the TDP for Domino connect agent to perform the backups,
you can not use backup sets for restore.  You have explained the steps you
are
trying to do, but haven't really stated what business need you are trying to
fulfill.
Why do you want an extra copy of the domino databases?  Is it to provide
redundancy in case of a restore?  If so, a copy storage pool would be a
better
alternative?
Once again, currently only the backup archive client is aware and can take
advantage of backupsets.   To the server, active versions of files look all
the same
(it's just data), so you can generate backupsets of api data.  But it is a
waste of a
tape since you will not be able to restore from it in any situation.

James Thompson