You can demote the current major version of a document to a minor version without checking the document out and in. When you demote the version, the major version number is decremented by one and the minor version number increments by one. For example, if version 1.0 is demoted and there is an existing minor version 0.22, the version number becomes version 0.23. If version 4.0 is demoted and there are no existing minor versions, the version number becomes version 3.1.
You cannot demote a document while it is checked out.
To demote a document version: