When trying to migrate delegate permissions for a shared mailbox, the following error comes up:
Failed to grant Full Access permission: || The operation couldn't be performed because object 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' couldn't be found
Target Shared Mailboxes had been deleted.
Please make sure that target mailbox still exists and has not been removed/deleted.
If the target mailbox has been recreated, then clear the match and rematch it.
