Found them. The transactions are from dates before Aug 5, 2023 back to Jul 3, 2022 and are all against Amex accounts. None appear to be categorized, but things that count un-categorized all show 0 and control-down in the category column goes to the bottom.
We think it’s possible our Amex connection just made some changes that expanded the date for historic data to pull into our database, and since these transactions weren’t yet watermarked as “filled” they have re-populated in people’s sheets. We suggest manual removal of duplicates instead of document restoration for instance, so that newly set watermarks are retained.