About Branching

A branch operation creates a child release that is the clone of the release being branched.

Branching can be performed only on a release. You cannot branch individual objects contained in the release.

When you branch a release, a batch job creates a deep copy of the release. See What Deep Copy Means.
Important: If you do not select the Clone Shared Content check box, referenced content that already exists in the Products cabinet is not cloned. See How Release Management Handles Shared Content.