I suppose that would depend on if the HD treatment made the original reg clearer or changed it digitally. If it's the former, then the 71807 reg stands. If it's the latter, then I suppose it's up to the individual viewer to judge whether they approve of the change or not. Regardless, the reg was officially changed by the people in charge of the production at the time.
As for the hyphen, I believe that's how it was written in the script and in official publications like the Encyclopedia.