The solution given was:
Within the Mailbox Policy on the Enterprise Vault (EV) server for versions 6 and up
Open the VAC and browse to the Site,Policies, Exchange, Mailbox section and right click on the Mailbox Policy. On the Advanced Tab, ensure you are viewing the Archiving General settings and change the Pending Shortcut Timeout value to 0. Once you set this registry value, you will need to open the VAC and right click to select Run Now on the Archiving Service/Task, select Report mode, and select the mailbox or mailboxes against which you wish to run the registry key functionality.
Reset this value back to it's original state once this is finished.