NAMPS, I disagree with your post. I have exactly the same credentials as Navajo King and my IFR ATO told me that I could operate NVFR under the IFR. Meaning that I could fly NVFR provided my intrument rating was current and I had 3 t/o and LDG's at night.
I've had extensive 'chin wags' with casa about Day/Night IFR to be told that all I/R's cover you for day and night ops. I also got told the paragraph that says 'day only instrument ratings' can only be issued to people who's licence is restricted to day (ie colour blindness) so confirming night is ok.