Adding new references to an unlinked article

I attempted to add a new reference to a previously unlinked article, Endnote somehow did not recognize that any new citation had been added - it would not format. I thought that once adocument is unlinked it stands alone as a separate/new document… That being the case woudl it not recognize a new citation regardless? The new citation appeared as annotated, but would not be formatted according to any journal I chose. Thanks.

Where were you choosing the new style?  In Endnote program or in the word document.  You have to change it in the word document.