I work in magazines, and we go through several Word file versions of a story before it gets placed into the layout (InDesign/InCopy workflow). There have been times when the story has been updated after the copy has been imported into the magazine, and it would be great to see which version is currently in the layout to ensure we're working with the most recent versions of the Word file. Just as you can see the linked images placed in InDesign, InCopy should be able to show the filename in which the copy was imported from!