Kevin,
The easiest way is through the Items Menu. There should be an item called Switch Items.
Once you open it there will be couple of drop down menus.
Choose the catalog of the cabinets you want to change FROM in the top left corner.
On the right side choose the catalog of the cabinets you want to PUT IN.
You will probably have to choose the NEW cabinets individual.
The press the Manual button on the bottom left of the box.
DO NOT PRESS THE APPLY BUTTON UNTIL YOU HAVE SWITCHED ALL THE CABINETS.