Missing Sitemap: Need Help Recovering Version 3 Wireframe and Copy

Hey Relume team, we have an issue that a sitemap with a wireframe and copy went missing. On the project we have 3 versions and V3 went missing. Not sure if its a bug or it got deleted, whatever might be the case we would like to know if theres a way to get it back. Is there some type of version control that I am not aware of? If not can you help us any other way? Thank you for the support!