This is an informational note for anyone who runs file synchronization software and also uses ExifTool. Let's say you have a folder containing an assortment of different file types and you create another folder as a backup. Then you run exiftool commands to change the orientation of image files to horizontal and to delete any thumbnails on the first folder. You would expect the two folders to no longer be identical. However, you would not expect (or at least I did not expect) that ExifTool would...