Selection of unedited and edited photos in a folder

Yes, to send your images over to facebook, first export them within lightroom, this creates copies with the lightroom edits. Now, when you accomplish the export, pay attention to image size, select your desired size as you want them in facebook. DO NOT export them full size, facebook has limits. DO NOT let facebook alter the image size, facebook will screw your images up if allowed to do so. To prevent facebook from resizing select an image size (typically on the long edge) that facebook will support without resizing (and/or resembling).

perhaps other members have fresh links as to facebook policy on image sizes.

I think 1200 on the long side works.

Oh, and remember sRGB, and you can probably get away with as low as 70% quality.

And pretty sure JPEG us preferred but not absolute.

We used to be able to use a LR publish service for facebook, but facebook no longer allows that outside of commercial facebook pages. (  Facebook authentication check failed  )To bad. (I do not have prof that commercial fab sites can use that)

ah, I see my image size recommendation is bull. you might want to look at:

https://louisem.com/120414/facebook-image-dimensions

Always Up-To-Date Guide to Social Media Image Sizes | Sprout Social

I don't think you can transfer edited photos by dragging the selection.

I think you have to export the photos in order to get the edited photos.