Use a file version
When you initially upload a file, you create a first version. When you or someone with Editor access uploads the file again, a new version is created. All previous versions are maintained. Versions can be deleted.
To access versions of a file, open the file page and click the Versions tab. We can find information including the version number, when it was updated, the person who made the updates, and the version size.
We can download versions of the file, and if you own the file or have Editor access, we can restore a previous version to make it the latest version. Only an owner or administrator can delete a version of the file. A new version is generated if you restore a file from an older version, or click Upload New Version to upload a new version of the file.
When you restore an older version, only the content of the file is restored. The title, tags, and other properties on the file page do not change.
The administrator can disable versioning. If versioning is disabled, the new uploaded version overwrites the existing version.
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