Using Everything Search I found several files dated 12/31/2022 23:59 and 01/01/2023 00:00. I don’t know when or how they were generated, however, regardless, as they seem to be mostly log or cache files I deleted them all (yes, I have a backup image).
Any clues anyone? For details, see the attached JPG (where J:\ equals C:\ as the former is the image drive).