Ok, so I went into the edit Photo and re-uploaded all the missing images. It was a pain doing them one at a time, but it seems to be working so far. I've checked on a couple different computers. Doing it individually saved the comments, likes, features, etc. It appears all the missing images I had, were ones that did something with on Friday. I either edited them to add a feature in the description, or I submitted them to a group. Could be different with everyone else, but that's what happened with me. Good luck to you.