Within the Mailbox Policy on the EV server for versions 6 and above
To cancel pending items using this method:
1. Open the VAC and browse to the Site,Policies, Exchange, Mailbox section
2. Right click on the Mailbox Policy and select the Advanced Tab
3. Ensure you are viewing the Archiving General settings and change the Pending Shortcut Timeout value to 0.
4. Select 'Ok' to save the policy changes and then run a Synchronization job on the appropriate Mailbox Archiving task(s) to which the policy applied
5. Open the Vault Administration Console (VAC)
6. Right click to select Run Now on the appropriate Archiving Service/Task
7. Select Report mode and the mailbox or mailboxes against which you wish to run the PendingShortcutTimeout functionality.
Then re Archive the emails this will the re enter them into EV after the next full backup