In the Exchange to Notes direction, the server hosting QCalCon may need to be changed on the contacts in Notes.
This issue can be resolved by using the following procedure:
1.) Open the CMN Management Console
2.) Right-click on the Exchange to Notes connector | Advanced Settings
3.) Click the "Users" tab.
4.) Click the "Update Attributes" tab.
5.) Select the "MailServer" attribute in the list.
6.) Click the Remove button.
7.) Click OK.
8.) Save | Activate the Directory Connector.
Note: Once the contacts have been updated, then the MailServer attribute should be removed from the "Update Attributes" tab.