http://blogs.technet.com/b/meamcs/archive/2012/10/10/challenges-of-migration-from-groupwise-to-exchange-2010-meeting-request.aspxThe previous article explained the first challenge which is co-existence: Challenges of Migration from GroupWise to Exchange 2010: Co-Existence In this article I will talk about one of the most annoying problems that may affect the migration which isen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/meamcs/archive/2012/10/10/challenges-of-migration-from-groupwise-to-exchange-2010-meeting-request.aspx#3525202Wed, 10 Oct 2012 14:56:39 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3525202Chad Lindley, Senior Product Manager, Quest Software - now part of Dell<p>Thanks Mohamed. This is an important step to ensure seamless coexistence. When using Coexistence Manager for GroupWise (<a rel="nofollow" target="_new" href="http://www.quest.com/coexistence-manager-for-groupwise/">www.quest.com/coexistence-manager-for-groupwise</a>) to synchronize directories, this property is automatically set to ensure GroupWise users receive proper invitations. </p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3525202" width="1" height="1">