OFP weight unit should follow selected aircraft's weight unit

I have some aircraft in my hangar that use kg as unit and some that use lbs. But I have stopped counting the number of times I have generated OFPs in lbs for a plane that uses kg because the “OFP unit” always defaults to lbs even if I select an aircraft that is using kg.

It would be nice if the OFP unit changes to match the selected aircraft.