A mailbox was moved , then disabled, possibly before completion as it only appears in disconnecting mailboxes in the old server not the new.

In trying to connect it back up it fails saying the mailbox cant be found. Anybody seem this  / able to help?

Please show in detail the exact process of what you're doing.

Yes please provide more detail

Thanks, no longer needed fortunately, handy app there in the signature, may take a look at that.