Old content doesn't just disappear; it sits in web archives, waiting to hurt...

https://tango-wiki.win/index.php/Ghost_of_the_Past:_How_to_Manage_and_Respond_to_Outdated_2021_Archive_Links

Old content doesn't just disappear; it sits in web archives, waiting to hurt your current SEO rankings. When forgotten pages resurface through automated scraping or indexing, they create keyword cannibalization and thin content issues that confuse Google