While you can't search for your the missing images you can search other ways.It would sure be nice if we could perform a Search based on photo name and user name so that we could find out if the files we perilously installed was still showing or not. If not, we could re-install them!
SearchSearch titles only: Post your sunset shots
Select advance search.
Enter your user ID. In the newer than box select your early start date. In the older than select an end date.
I selected the year 2017.
Some possible image threads. Select the title, right click select open in new tab for any you want to check. This way your search window will not close if you need to go back to it.
Missing images found.