Merging iPhoto's library with Aperture's
What I want to accomplish: merge my iPhoto library with my Aperture library, creating one Aperture library while removing any duplicates.
What I've done: copied my iPhoto library to an external disc.
What I've tried to do: use "import library" on the Aperture File (while in the current aperture library on my internal disc) menu to import the saved iPhoto library on my external disc.
What happened: iPhoto library is visible but not selectable.
What went wrong? Thanks.
MacBook Air, OS X Mavericks (10.9.4)