Trying to decommisson 400GB database

I am working on you E2103 on-premise. single domain install that had a corrupt database. I have created new db and moved all mailboxes to new with only minor issues. Ensured all Approval Assistant, Arbitration, Federation and System mailboxes have been moved.

When I tried to delete old db, I got the "This mailbox database is associated with one or more active MailboxImport requests.". So I checked pending/failed Requests and had a few listed. Determined it was ok to remove them and proceeded to do the ones I had the Identity for.

Issue is thatGet-MailboxImportRequest lists 2 remaining Requests with no Mailbox assigned (as shown below)and is preventing me from removing the old db.

Name                                       Mailbox                         Status

MailboxImport                                                               Failed

MailboxImport                                                               Failed

Any suggestions on how to identify these or more specifically remove them so that I can delete this almost 400GB dead db?

Your input is much appreciated.