When your old content surfaces unexpectedly, it can confuse users and hurt your...

https://wiki-book.win/index.php/Should_You_Noindex_an_Old_Page_or_Rewrite_It%3F_The_SEO_Cleanup_Framework

When your old content surfaces unexpectedly, it can confuse users and hurt your SEO. Whether it’s due to aggressive scraping or forgotten cached pages, these ghosts damage your brand authority. Don't let legacy clutter ruin your search presence