Sorry for the delay, here is the solution:
To disable Hard Deletes Reconciliation
If using BlackBerry Enterprise Server, complete the following steps:
1. Open BlackBerry Manager.
2. In the Explorer view, click Server.
3. On the Server Configuration tab, click Edit Properties, then click Messaging.
4. For the Hard Deletes Reconciliation option, choose False from the drop-down menu.
5. Restart the BlackBerry Enterprise Server services.