Detected face previews.

Thank you for the reply. I have the pages of a school yearbook scanned. I
brought that folder up in lightroom last year. I used "find people" and got
all the faces as previews on screen. After a lot of searching I found a way
to save those faces as individual jpg's. athe problem is, I processed all
those with upscaling and denoise. The denoise destroyed some of the faces
and I lost the original saves. It was not straight forward but I found
those jpg's in a Lightroom file. I can't seem to get back there. I don't
remember what I had to do or if I used some tool I found on the net but I
did manage to get those faces extracted. I really appreciate your response.
There is a workaround but unfortunately I blew it by losing the original
saves.