You can create as many versions of your composition as you like, to facilitate creative decisions, to preserve a composition in a given state for later reference, or to track changes you have made.
To create a new version of a composition:
Select any version in the Version browser to display its outputs and their rendered status in the Output browser at the right of the Version browser. You can also open, view, delete, and revert the selected version from the Version browser. See the Viewing Rendered Versions of a Compositionsubsection.
When you revert to a previous version of a composition, the contents of that version are copied over to the working version.