Google Docs, Sheets, and Slides keep all your drafts in one file, and you can easily look at or restore earlier versions with the revision history.
In the past, you might’ve kept multiple drafts of your files in case you needed to refer or switch to earlier versions. Google Docs, Sheets, and Slides keep all your drafts in one file, and you can easily look at or restore earlier versions with the revision history.
Examples
– Track changes to important files.
– Revert to previous versions any time you change your mind.
– See the original version of an uploaded document
– When you’re collaborating with others, view a record of who made which edits in your file.
– Keep your folders clean-there’s no need to keep multiple drafts of your files anymore.
More info and instructions here:
https://gsuite.google.com/learning-center/tips/docs/#/show-tip/switch-to-earlier-version-of-doc