Part of my images missing in a folder in LR CC 12.2
My OS is WIN10 fully updated.
After updating to LR CC 12.2 I miss a lot of pictures in one of my drives:
Normally there are 9345 pictures in this folder.
So I try to Synchronize the folder and indeed there are 9345 new photos to import:

LR CC starts the synchronisation but didn't import none of those missing images.
My conclusion is they are in the LR Catalog but not visible in the LR Library.
Maybe importing them again will help?
Well, no. The Import detected the photos on the hard drive but then made them greyed out to indicate they are already in the catalog.

I already followed a similar problem here but the solution proposed didn't help.
Any suggestions.
Tkx.
