The current version of Lightroom Classic CC's file manipulation seems to have an issue, unless it is just me. I recently imported a couple of hundred images from a shoot and did some editing. On returning home, I went to move them, from within Lightroom, to a different drive (note that these are all within the same Catalog). Tried to drag them, and nothing happened. Right-clicked, hoping to be able to cut/copy and paste. No joy. Well, actually, from within the top-level folder, about 6-7 files moved, but the sub-folders and the other files did not. This used to work flawlessly. FWIW, I'm on Mac Sierra (10.12.6). Scott
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