You restore a mailbox into a registered Archive Manager target storage. You notice there is a duplicate mailbox created in the Archive Manager database and the owner of it is the account you specified when connecting to your Archive Manager target.
This problem happens using any source that has to do with Exchange.
E.g
Registered Offline Exchange database Source Storage
Backup from Tape
Online Exchange server
WORKAROUND
None
STATUS
Issue fixed in version 5.6. The latest version of Recovery Manager for Exchange can be downloaded at: https://support.quest.com/download-product-select