folder pictures missing after folder is updated

Really don't know what I'm doing. I decided to delete the 1989 folder from my imported folders and reimport the folder. So I selected the 1989 folder to import and the resulting screen shows many of the photos grayed out. All of these are listed as "duplicate" when I hover of the file name.

By @leer44346667

First, you should know that re-importing photos rarely fixes anything. Avoid doing this, and avoid thinking that reimporting will solve a problem.

Once you have a file name of one of these greyed out photos, exit the Import dialog box and in the LrC Library module, search for the photo by following all four of these steps in order.

1. Click on All Photographs (its shown in the screen captures from @Rob_Cullen )
2. Turn off all filters (Ctrl-L once or twice)
3. Expand all stacks (Photo->Stacking->Expand All Stacks)
4. use the LrC filter bar to search for a photo or photos that have that file name

The above search should find the photo(s), and you can then find the folder it is in by right-clicking (control-click on a Mac) on it and select "Go to Folder in Library"