We just tried out the new export plugin in WordPress 3.1. Here’s how it looks like including the option to export navigation menus. A cool update is the export XML file now appends the name of the site to the file name instead of just including a date.
So did the navigation export work? We transferred the content from one Thematic site to another Thematic site and it did not seem to work. We’ll try it one more time and update this post later.
Update: We got the imported navigation menu working by going to Appearance -> Menus and selecting the imported menu as the primary menu.