That was the same for the first, '78, as it was for the final, '86, versions of the 700. Take the 700, like the R60, this had four wires running from the pickup to the poles on the mini-toggle switch. You seem to be suggesting that the schematic on the GF site doesn't relate to your R60, but I think you're reading it wrong.
Here, though, is where I'm getting confused. There were three versions of the MB-II over the time it was in production, but a bass dating to '82 probably has a late first version installed, although if it was made late in '82 possibly an early second version. For this switch, down was labelled "normal", and was "phase in", whereas up was labelled "reverse", and was "phase out". The other "dual sound" switch Aria installed, on the likes of the 900 and R80, was a "phase" switch. When Aria refer to "bright" (up) it means single, and when it refers to "deep" (down) in means double. The standard "dual sound" switch installed, on the likes of the 700 and R60, was what Aria originally called a "sprit" switch (aka coil tap). I'm also confused by the suggestion that the mini-toggle switch has three operative positions, not two.