That's my preference, i.e., that thumbnails are included in the backup ...
thx.
Now that I'm paying closer attention, I see the following...
Without thumbnails, the Library backup file is around 20MB in size.
With thumbnails, around 100MB.
With that in mind, the automatic routine backup that MC performs does not seem to save thumbnails in the backups. The thumbnails only seem to be saved when I manually select File>Library>Back Up Library from the menu and answer yes to the prompt for thumbnails.
Also, thumbnails are not saved when I run the command from the command line, above.
Am I missing a Tools>Options setting that enables Thumbnail saves with each Library save? I tried searching options, but came up empty.
While my preference is to save thumbnails with the backups, not saving them is not a big thing for me, as they are recreated if needed.