I have been compiling summary statistics for the year, and when I get to November, AI does not recognize any use.  In my library, there are projects on three dates in November involving about 200 images using two cameras, and four different lenses.  None of them show up. When I look at December, none of the projects in early December show up, but a project on December 23 does. When I look at these projects in Aperture, all of the data is there.  I have rebuilt the library and added it back into AI without any success.