Documents can be created and edited within the Separation Workspace by copying. Entire existing documents or select pages can be copied.
When you click the bottom portion of the Copy button in the Modify ribbon group, three options are presented:
Copy Pages to a New Document
Copy Pages in Place
Clicking the main portion of the Copy button will perform a Copy Document operation.
A document that is created by clicking Copy Document or Copy Pages to New Document will inherit the indexing information from the source document that it was copied from. If the new document is created using pages from multiple documents, no indexing information will be inherited.