I recently copied all folders and sub folders to an external hard drive. Now going back to the original folders the catalogs I had are missing!! They aren't on the external hard drive either. Addmittedly I wasn't using LR properly and had many many catalogs, basically one for each folder (I now know better after recently attending a LR seminar). Anyway, those *.lrcat files should still be there but they aren't. Anyone ever experience this?