All, We made the mistake of creating some backupsets from backups created by Domino API. While backupset generation from these filespaces works fine, you can't restore anything.
Querybackupsetcontents shows all the data, but TSM backup client knows nothing about API:DominoData filespace types. I'm throwing this out to the reflector hoping someone might have some idea about restoring files from these backupsets, even though it is not supported by standard TSM products. Thanks. Regards, John Bremer