Legacy content has a habit of resurfacing through search engine caching, often...

https://www.emergbook.win/stale-content-often-reappears-in-search-results-via-legacy-cache-files-or

Legacy content has a habit of resurfacing through search engine caching, often hurting your current site’s authority. When outdated pages reappear in SERPs, they confuse users and dilute your brand messaging