ninomarques,
To enable hard delete support do the following:
-Open BlackBerry Manager.
-In the Explorer view, click Server.
-On the Server Configuration tab, click Edit Properties, then click Messaging.
-For the Hard Deletes Reconciliation option, choose True from the drop-down menu.
-Restart the BlackBerry Enterprise Server services.
See RIM KB04853 for more details:
http://www.blackberry.com/btsc/searc...200%2033127421