Lightroom CC (v1) is showing a few greyed out photos when I import from my SD card. It believes these are duplicates but they are not - I just took them this afternoon. After searching around for the filenames in my library, there are indeed other photos with the same file name (from 2013). So I'm unable to import my new photos as there's no option to ignore the suspected duplicate warnings. Lightroom Classic doesn't seem to have this problem, and allows me to import without finding these 'faux' duplicates. Perhaps it's to do with folder structure in Classic vs CC whereas the folders are all segregated in Classic and one heap in CC? Either way, even if Classic were to find duplicates, there's an option to ignore these.
Lightroom CC needs smarter ways to detect duplicates, have the ability to override the suggestions, compare the suspected duplicates and offer a choice to rename. The suspected photos in my case are very different (apart from sharing the same file name).