For some reason it thinks that the photos are already imported to the catalog, when in reality they are completely new photos. I import the photos from my phone to my downloads file, and then select them from the folder. Then it would darken the photos that it thinks are already imported and I have to go back and select one by one. I've already unckecked the "don't import suspected duplicates"... still makes trouble every time I import.
I have the similar issue. I edited in LRC a set of photos. Exported to thumb drive for review. Now I want to import from thumbdrive to work on just those specific photos. I save from the thumbdrive to a folder on my desktop. LRC will not let me import these even as a new collection. It just keeps the original set I am done with and greys out my new folder because filenames are the same I am guessing. So I cannot import this seperate set of copied photos. This is ridiculous. How many bad versions of LR does a guy need?