Yes, I guessed it might be arbitrary to a degree, whichever way round it is
I am looking at the little picture for logic when it probably exists in the big picture instead.
Let's take the conversation on a bit.....
Hypothetically speaking if a pilot were to complete a variation to his PPL (i.e. the removal of the night restriction) which was completed by an fully qualified instructor using an a/c which was operated in the private category, where does that leave his rating/variation and his licence......legal/illegal. Should he fly, should he not, should he complete the five hours again?
If he does fly then I wonder what would happen if there was, God & Keef forbid, an incident.
Insurance valid

not sure....he might find himself in one of my courts
Any views?
Barney