I have all my lightroom photo's on an SSD. Recently i purchased an identical SSD and made a clone.
My plan was to take SSD 2 travelling, so I could add to my library and edit existing photo's and then once I return from travelling merge the 2.
What I've noticed is that, on my desktop machine with SSD1 as the catalogue. If I try to import files from SSD2 to my lightroom catalogue on SSD1. Lightroom will not detect duplicates. Despite the files being identical, byte for byte. With the 'don't import duplicates box checked' lightroom will still import duplicate files and rename them 'FILENAME-2.DNG'.
Why is it doing this?
Oddly, it will detect duplicate jpegs, just not duplicate DNG's.