I have Lightroom 5.7.1 and continue to experience a reduced number of photos in my library. The files are preserved on the hard drive but lightroom forgets that they are there when I open it up. It began, I believe, after the most recent update. These images have all been originally imported with lightroom and I don't, to my knowledge, use any other image editing software that might be competing with Lightroom. I have to first notice that they are missing, which has typically occurred when I plug in my camera and it attempt to re-import photos that I have just imported within the last two months! I have to then cancel the camera import of new photos, click "synchronize folder" in the lightroom library and re-import the missing files.
So far I've re-synchronized my entire photo library, which is on a separate hard drive than my C: drive. There were a tremendous amount of images that were re-imported from many of the different folders, which are organized by dates as set up by lightroom. I am running up-to-date Windows 7, 64 bit and the Lightroom is the latest 5.7.1 64 bit. I do have filters off, so I am not just unable to see the entire library. I only have the one catalog and have not loaded other catalogs. I do run the catalog backup and optimization from time to time.
The metadata for previous edits are then lost. Why does this keep occurring and how do I fix it? Anyone else experiencing this?
Thanks in advance.