https://www.cnet.com/news/microsoft-starts-limited-rerelease-of-windows-10-update-that-deleted-files/

"We have fully investigated all reports of data loss, identified and fixed all known issues in the update, and conducted internal validation," said Microsoft Windows Director of Program Management John Cable in the post. 

Microsoft is now rereleasing an updated version of the October 2018 Update to its Windows Insiders, the company's testing program that lets users register for pre-release builds of the operating system.