Categories Not added to Category Roots

[Mark A. Lutz]

I am using the following store and category format during the upload

store,categories
root,[Default Category]/Bolts and Studs/Cylinder Head/Head Studs and Bolts;;[ARP Products]/Cylinder Head/Head Studs and Bolts;;[ARP Products]/Titan Motorsports Exclusive

Store = root
Categories have 3 entries:
[Default Category]/Bolts and Studs/Cylinder Head/Head Studs and Bolts;;
[ARP Products]/Cylinder Head/Head Studs and Bolts;;
[ARP Products]/Titan Motorsports Exclusive

My Expectation is that one entriy would be placed in the root category of [Default Category] and that two entries would be created in the root category of [ARP Products]. What is happening is that it is creating top level categories [Default Category] and [ARP Products] inside of the root category [Default Category]

In otherwords it looks like
 Default Category
            Default Category
                      Bolts and Studs
                                Cylinder Head
                                          Head Studs and Bolts
            ARP Products
                      Cylinder Head
                                Head Studs and Bolts
            Titan Motorsports Exclusive