A user organised a meeting and sent it to 3 recipients. All 3 recipients responded to the meeting invitation. This invitation appeared in all four calendars. The organiser then dragged the meeting invite to another day, thus changing both the date and time. As part of this action the organiser accepted save changes and send update.  The organiser received responses to the new meeting time. The meeting appears in all 3 original recipients calendars. However, the new date and time is not visible in the organisers calendar. This calendar still reflects the original date and time nothing has changed.

Background: the client is running Outlook 2010 (14.0.6023.100).  Exchange 2007 RU 15.

On the organisers Outlook profile I can see two items in the sent items folder. One for the original meeting invite and one for the second updated meeting invite. The option to accept the meeting invite is greyed out for the organiser as expected. If I drag the second meeting invite (with the new date and time) to organisers calendar, with the intention of adding this to their calendar, I am prompted that as meeting organiser, you do not need to respond to the meeting.

There are no errors reported in the synchronisation folder.

The same experience is visible in OWA.

Any ideas?

• Edited by mmexchange 10 hours 9 minutes ago