iPhone 5 w/ latest iOS receives an invitation for a calendar event. User opens the ics and adds it to his calendar. No problem. Entry is made. The original author of the calendar event changes the time/date/details of the event and resends the ics. The iPhone 5 user opens the ics and the ORIGINAL details are listed... no changes appear. No updates are made to the calendar. If the iPhone 5 user forwards that ics to someone else, they see the changed details in the ics. Any ideas on what this is???? ================================ Some other odd behavior: sometimes the user cannot open the ics at all. Same originating source, and yet the behavior is different. Originating sources tested are: Local school using it's own CalDav server. Exchange server. Google Calendar These are good known working sources that work 100% on a MS Exchange 2010 account. The iPhone seems to retain the original calendar info and won't budge from that original information. ================================= Any help would be greatly appreciated!