The EN citations and their corresponding references are tied together. If you copy a citation from a document and paste it into another document, it will bring its reference with it, even if the library is not open. If a writer wants to copy citations without bringing the references along with them they need to uncouple the citations and references in the original document. Once this done, it cannot be undone. Therefore it is best to make a copy of the document from which you want to copy the cites/references and separate the citations from their references in that copy. Save the original in the format that still has the cites and references hooked together. to separate the tie between citations and references go to the bibliography seciton of the EN ribbon> click on the drop-down menu next to Convert Citation and Bibliograpy> select Rich Text. Then they can copy citations and stick them into a new document. When you get the new document you need to open the corresponding library so that you can go to the place in the text where they have pasted the citation> click on Insert Citation> find the correct reference in the library and Insert. That will then create a citation that is tied to the reference that is created in the new document.