User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1 Build Identifier: 0.3.1 (build 2007021403) When trying to edit an event/task one is presented with the options: 1. All occurrences 2. This occurrence only These options do not fit if e.g. one has a regular meeting which was rescheduled permanently. For such cases an option such as 3. All future occurrences would be useful which would leave the past events unchanged but would modify the occurrences after (and including) the selected item. Reproducible: Always