Menu structure and URL paths I am using a Superfish 2 level navigation menu, and have 3 sub-items under an item. 
The url path for the second level item is NOT item/subitem but instead just subitem, if that makes sense.

I've got Generate automatic URL alias checked.

Is it acceptable for the subitems to not have their parent items in the url path? If not, what is the easiest way to automatically have the item appended to the subitems url path?
Yes, it is acceptable for child menu items to not contain any of the parent item's path.