How to edit site map

How do I go back into Surveyor to edit a site map created earlier? For some reason this isn't covered at all in the getting started guide.

Choose Insert > WebAssist > Surveyor > XML Site Map and choose Edit existing site map and browse to your xml file.

What about changing the style of the site map, is there no way to do this without starting all over?

You could edit it directly within dreamweaver just like any other page, or you could start over to create a new map.

I went back to the product page for Surveyor and FAQs. It says that "Yes. You can re-enter the HTML sitemap wizard to quickly and easily make necessary changes to an HTML sitemap that has already been created by Surveyor." Apparently this does not extend to changing the style, which I know I can change manually in the style sheet but not the point at all. A much more useful feature would be to be able to re-enter the Surveyor interface and change to one of the other preset layouts/designs. It seems like such a fundamental feature, I'm surprised it's not part of the current version. Consider it for the next one.