While I was showing the functionality of the "On accept, continue to display the item in the Mailbox" to someone who didnt like the sender auto accept feature, I temporarily enabled this on my mailbox. It is now turned off.

If I accept an appointment from the GroupWise client the appointment disappears from the mailbox as expected with the above option disabled..as expected.

If I accept an appointment from a Blackberry (BES 4.1.6, GW client on the BES server is 7.0.3) the appointment gets accepted but still displays in my mailbox as if I still have the option enabled. I also tested this on the GW c7.0.3 client installed on the blackberry itself and there it works correctly as does the GW 8 client. So it appears only to be broken when I accept from a blackberry.

I have only been running GW 8 on my post office for a little over a week so I am not sure if this was an issue prior to temporarily turning the option on or not.