GroupWise client version compatibility for modified recurring calendar items

In GroupWise 8, you can right-click on a sent calendar item, then click Modify recipients to add and remove GroupWise recipients without resending the calendar item.  If the recipients include users in GroupWise 6.5 or GroupWise 7 systems, those recipients see different functionality than GroupWise 8 recipients.

This is working as designed.

• GroupWise 6.5 post offices:  The GroupWise 6.5 client still goes through the retract and resend process.  Removed recipients see the retraction.  Added recipients receive the new calendar item.  existing recipients in the post office must re-accept the calendar item.
• GroupWise 7 post offices:  Install the latest GroupWise 7 Support Pack Post Office Agent.  If you do not apply the latest Support Pack, GroupWise 7 users might see incorrect retractions and incorrect Reply to All lists.  In addition, orphaned messages can accumulate in the GroupWise 7 post office.  GroupWise 8 users might see incorrect totals for the number of delivered users.