How do I import calendars within a specific time frame?
Re-importing my calendars from separate devices will cause duplications. What if I don't wish to import an entire calendar?
iMac, Mac OS X (10.7.4)
You can't do that unfortunately, your best workaround would be to import them into an 'On My Mac ' group and change the calendar setting on each event that you wanted to move to the other calendar.