Editing Flags

Hello everyone. My version 12 Ligthroom Classic stopped showing me wich pics I have previously eddited and inserted caption + tags. I used to be able to easily find the pictures I had previously worked on from the whole bunch I uploaded just because it would show the little signs on the bottom right part of the pictures. One sign for cropping, the other one for the keyword tags, for edditing and so on. The pictures would be clearly flagged for me and now those flags disappeared and even after I crop, edit, put all my key word tags and captions, the won't show any signals. They all look almoste the same to me even after I select and work on a few from all the uploaded bunch. No flags, no more clear signals showing me wich ones I have worked on, and that makes a huge difference. 

Would really aprecciate if someone could kindly instruct me on how to get my editing flags back. 

THANKS!!