Import calendar data
I often export my work calendar from MS Outlook into the .ics format. Then I import it into my work calendar in BC2. It works well and very smoothly. However, before importing of the new data I have to delete old data. Otherwise the items are duplicated. The new feature could either (1) remove all data from the target calendar, or (2) erase only older duplicates so that the calendar is up to date.
It already deletes duplicates, just a unique identification is needed.