So, by ARCHIVE/RESTORE you mean the server operation to put/get of the calendar store to a server-side storage device. By IMPORT/EXPORT, you mean the act of asking the CS for a stream of iCalendar data representing the current state of the calendar store or pushing to the CS a stream of iCalendar data representing the current state of the calendar store?
The term "IMPORT/EXPORT" is confusing, then. It implies the common vernacular which would be a CUA file function.
We want a EXTRACT/INSERT type of capability, then?
-- Frank