CargoTypes union_refit_mask = GetUnionOfArticulatedRefitMasks(engine_type, false);

	const Order *o;

	const Vehicle *u = (v->type == VEH_TRAIN) ? v->First() : v;

	const OrderList *orders = u->orders.list;

	for (VehicleOrderID i = 0; i < orders->GetNumOrders(); i++) {

		o = orders->GetOrderAt(i);

		if (!o->IsRefit()) continue;

		if (!HasBit(union_refit_mask, o->GetRefitCargo())) return i;

	}