How do I move individual events from iPhoto to Aperture? I follow the instructions in the manual and it does not work.  (Choose File>Import>Show iPhoto Browser.  No Show iPhoto Browser option comes up.)  I do not want to move the entire iPhoto library into Aperture at this time.  Eventually I plan to have the vast majority of my photos in Aperture as Masters,  not referenced, as I use the organization format I am going to use in Aperture and its additional organizing features.