NetFiles keeps track of all versions of a file - whether you or someone else has uploaded it. NetFiles has file versioning turned on by default.
Note: Versioning can be turned off. NetFiles keeps the latest version. Versions will be retained until you remove them. Remember that Versioning counts toward your total quota of 5GB.
NetFiles: Move Files and Folders to Google Drive
NetFiles: Being Retired
NetFiles: Eligibility and Access
Manage Data & Documents
Compare Options for Data & Document Storage