I have a main level menu item (Shopping) that points to an external URL. I have it set to open a new window regardless what setting I use but it doesn't; it opens the external URL in the same (Parent) window.
As an aside, I have a sub-menu item (Store) in the same menu tree defined exactly the same way and that one works.
Why doesn't the main menu item, Shopping, work?
See attached snapshot--you can see for yourself the behavior by visiting my site.