Stumbling upon legacy content in search results is a common headache that hurts...

https://www.scribd.com/document/1016381165/Why-Do-Old-Content-Problems-Show-Up-at-the-Worst-Possible-Time-205018

Stumbling upon legacy content in search results is a common headache that hurts your site’s authority. Often caused by outdated server caching, these ghost pages confuse users and dilute your SEO efforts