When search engines resurface forgotten or outdated legacy content, it can tank...

https://www.kilobookmarks.win/stumbling-upon-legacy-content-in-search-results-is-a-common-headache-that-hurts

When search engines resurface forgotten or outdated legacy content, it can tank your site's authority and confuse your users. This happens through aggressive caching or deep-link discovery, dragging irrelevant pages back into the spotlight