Edited photos vanished!

So last night (after I posted this) I did see that there was an ! with a note that says "Metadata has conflict.  Synced with Lightroom".  While the photos weren't all in their edited state (some actually were) I was able to quickly flag those with this information and do a quick edit for the client.  Not exactly sure what happened still.  I spoke to Adobe on the phone and honestly, they weren't much help.

If they are in "All Photographs" but not edited, here's a possibility ... you (accidentally) imported the photos more than once, and one time they wound up in a different folder. So you now have two copies, one edited and one not edited.

In the "All Photographs" view, use the filter bar and search for one of these photos by file name. Do you find two copies?

If I understand correctly, you can see these photos when selecting "All photos", but not when you select the folder.

If it's the case, in "All photos" does these photos have an exclamation mark (!) on the top right?

If they don't have the exclamation mark, right click one one photo and select "Go to the Library folder" to see where they are stored.