Lightroom Classic: says photos are missing, but they are actually there
I have a folder structure consisting of about 20k photos. Every time I go to synchronize root folder it says about 6k photos are missing. But they aren't.
This problem happens only when importing files from another catalog. As I migrated to macOS, photos from older Windows 10 were backed up to external HDD alongside its catalog. Then when loading them in Lightroom on Macbook, program says they are missing.
When loading photos in Lightroom on Mac, I pointed their new location on HDD and everything seems ok. Not a single image has a regular exclamation point, no folders are greyed out with a question mark. Photos are not smart previews. I have no problem going into develop module and even exporting so called missing images.
Exiting and opening Lightroom doesn't help as well. I even went so far to create a brand new catalog, where I imported images from the previous one. The problem still persists!
Using latest version of Lightroom Classic 10.2 on Big Sur 11.2.3