Yes, it does show it that way, but electrically it doesn't matter, they are wired together. Another difference is in the II the Vol. pot wiper goes to the output jack. On the IV schematic the Vol. wipers come from the pickups. Again that is the same result electrically, you just have to be careful that you don't wire it backwards. Clockwise should raise the volume.
Interesting question though: it is counter-clockwise for lefties, or the same?