I could well be wrong, certainly wouldn't be the first time, but, if you are IF at night and are on approach to somewhere in cloud, do you not go IFR to NVFR once you are visual???? I know that this is really splitting hairs but you are not IF all the ay to the ground. Every time you finish an approach at night from IFR you end up NVFR, with that in mind, the currency requirements for NVFR would be met!!