My interpretation of the reason for that provision is to prevent anyone who can link the two identities together from saying.... Even if they don't make the link of the identities, they link them to the new location, and that simply means that the people who are potential threats to that person would now know where to look. It would be as good as telling them the name of the person. And that's the reason why you have the double prohibition on those two types of information.
On June 7th, 2007. See this statement in context.