Ok - quick one.
If it's cold (ie well below 0˚C, but above MUT) - would you correct the barometric DA on an ILS?
If yes - why wouldn't you correct the DA on an APV-BARO approach? Both are 3D - both are based on a OCH (or VEB in the case of the APV-BARO) - so why would you have one type of approach where you don't correct your baro DA, but do it on all the others?