Throw ranges are in Truck MPs and therefore are affected.
HQ draw ranges are also in Truck MPs and are therefore affected. Truck extenders are affected since they use Truck MPs. Wagon extenders are not affected since they use Leg MPs. The road hex running south through Slobodzera remains an Axis supply source, but the rail line which runs off the map south of Slobodzera actually runs off the map south and EAST of Slobodzera and therefore is not an Axis supply source as long as the rail line is cut. Yes, but there's no point in putting a combat mode HQ in reserve since construction, etc.