Forwarding an encrypted email, using Entrust Entelligence, that contains an attachment, drops the attachment

Steps to duplicate:

1. Ensure the sender and receiver are logged into Entrust
2. Within the GroupWise client, right-click on any email in any folder and select to "Forward as an Attachment"
3. Go to the GroupWise Client's Send Options, select the Security option and  check the box next to "Encrypt for recipients"
4. Proceed to send the email to a user outside the GroupWise system, for example  to an Exchange user
5. The recipient Exchange user will receive the email but missing the attachment

Add the following registry key to the workstation running the Outlook client on the receiving end.
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Entrust\ESPOLK]
"DisableSMIMEDecode"=dword:00000001