I've been trying to do this now (i.e. July 2023) on Word 2016, and while I can remove w:date="[\d\W]*\w[\d\W]*\w" from both the document.xml and comments.xml files, it's not removing the date from the tracked documents. I've looked through the other xml files in the word folder, but can't find it hiding anywhere there. Any ideas where it might be logged?