(not I heard of a guy, etc)
Don't know if you consider this hearsay, but on another forum dedicated to C&R there have been posts stating that for an audit the agent just wanted to see the bound book. The licensee was able to make an appointment at the BATF agents office to show him the book without even showing him the guns listed.
Still, only an internet post, but I don't think it's a big deal if you keep everything on the up and up....For now anyway! Who knows what the future could bring with the up coming election?