stamps are not removable. When they are saved, they are permanent stored as annotations.
Craig, now this makes much more sense to me. Thanks for the clarification.
Your users could use the "Store Automatically" functionality in the tray but I would suggest that you switch over to the DocuWare Configuration (Click on your name at the top and choose "Configurations"), then open "Outlook Email" from the configurators. You should check which configuration your users are using (In Outlook click on the tab "DocuWare" and check the dropdown for Storage). Back in the configuration open this configuration and change the target to be directly the file cabinet.
Back in Outlook log out from DocuWare and back in (or restart Outlook) and give it a try.