How may I duplicate a file collection?

Some of my collections now contain 20+ saved searches.
Is it possible to duplicate a collection so that I can delete half the searches from one collection and the alternate searches from the other collection?

Copying and pasting can be achieved in the Lister!

Collections (including Stored Queries) can be copied in all the same ways that normal folders can be. Copy & Paste, or the Copy Files button, etc.