We have Exchange 2007 and an increasing number of Outlook 2013 clients. If a meeting is created using Outlook 2013 the meeting acceptances are recorded in the tracking tab of that meeting. However, if the meeting is modified renewed acceptances are not recorded from people who previously accepted and the response column says "None", though acceptances from people who hadn't previously responded do get added to the tracking.
Furthermore if a meeting is created in OWA or Outlook 2007 everything works fine, but if the original meeting was created using Outlook 2013 modifications in any client do not then allow acceptances to be recorded in the tracking. If the meeting was created in OWA or Outlook 2007 modifications using 2013 still do not process into the tracking.
The acceptance messages that fail to record in tracking contain the text "We couldn't find this meeting in the calendar. It may have been moved or deleted. xxx has accepted this meeting."
Though I've found various threads about not processing tracking I can't find anything that matches this situation, and I can't think of any other combination to test. I'd be very grateful for any suggestions.
Regards
Mark Salter