I have the problem that a certain kind Org entries is not exported by the icalendar exporter, namely those created by the gnus-icalendar package.
This package creates Org entries from calendar invites in the following way (I've omitted some of the properties, but you get the idea); ** Some appointment (location) :PROPERTIES: :ICAL_EVENT: t :ID: 040000008200E00074C5B7101A82E00800 :DT: <2013-12-09 Mon 13:00-13:30> :END: Body text These entries show up in the agenda just fine, but the icalendar exporter does not export it because the timestamp is in the properties (the gnus-icalendar package puts it there so that you can easily change it if the organizer decides to change the event and sends a change request). The exporter could of course simply take the first timestamp it finds in the properties, but it could be the wrong one; for instance, there could be a LOGBOOK timestamp before the one in DT. Hence I think it would be nice if you could tell the exporter which property to use as timestamp during export. -David
