Welcome to the forum! :D
Assuming the stacks are wired the same as the Vintage Rails in the diagram, it looks like they're wired as if they really were single-coils - only the bridge pickup has coil-splitting options. It splits "automatically" in position 4 on the switch, or you can split it in any position with the push-button.
(I think it only says "simulated" because it's a split humbucker rather than a "real" single-coil, I'm sure it is a real coil split)
So, I reckon you should be able to wire it the same as it is now (subject to the different colour codes on the pickup cable) and everything will work fine.