Thanks for the information.
Our concern is that these solutions has not changed, and it was working for you before you upgraded, something is likely to be broken in the GW 2012 client or different with your environment. If this assumption is correct, we may or may not be able to work-around it. This will mean identifying the cause and, if it is a GroupWise issue, notifying Novell.
Once we have more information, will let you know.