The issue is that I have some files which can't find their master (or reference? I'm still not sure of Aperture's verbiage). They all have the icon in the lower right corner:
But I'm not sure how to make that go away / connect it back to the original image. When I right click and go to "Locate Referenced Files" I can't navigate into the Aperture drive on my computer, where I know the file is.
How do I re-merge the library so those files are properly updated? Or just show it were the file is.