I don't know what I've done and it has me totally baffled. A couple of weeks ago I imported a small set of photos, all in a folder by themselves. I did some editing on them and exported a few to put on my iPad. Today I wanted to go back to one of the photos, but the folder it, and the others, was in was no longer listed under the Folders panel. So then I searched for the file by name, but it was not to be found. I've done a lot of rearranging recently, so I figured that I must have messed up and accidentally removed the folder. Since the original folder was still intact, I to just just import it again. But Lightroom won't do that, saying that the photos are "suspected duplicates". I ran "Find Missing Photos", but that didn't find any of these. So, a) how do I find where Lightroom is hiding these photos in the catalog, or b) how do I get Lightroom to forget about them so that I can reimport them?