Branch a snapshot
When you branch a snapshot, the DITA CMS first publishes the snapshot and then creates a branch from it. New, editable versions of the map and its objects are created in the Authoring cycle and given the status Authoring:work (or its equivalent in your workflow).
Publish a snapshot
When you publish a snapshot, the DITA CMS creates copies of the snapshot map and its objects and puts them to the Publish:done status (or as configured for your deployment).