Fine-tune release of parking slots

game/migrator.py

@@ -78,8 +78,7 @@ class Migrator:
     def _update_control_points(self) -> None:
         is_sinai = self.game.theater.terrain.name == "SinaiMap"
         for cp in self.game.theater.controlpoints:
-            for parking_slot in cp.parking_slots:
-                parking_slot.unit_id = None
+            cp.release_parking_slots()
             is_carrier = cp.is_carrier
             is_lha = cp.is_lha
             is_fob = cp.category == "fob"

game/theater/controlpoint.py

@@ -1021,8 +1021,7 @@ class ControlPoint(MissionTarget, SidcDescribable, ABC):
         # clear the ATO and replan the airlifts with the correct time.
         self.ground_unit_orders.process(game, game.conditions.start_time)
 
-        for parking_slot in self.parking_slots:
-            parking_slot.unit_id = None
+        self.release_parking_slots()
 
         runway_status = self.runway_status
         if runway_status is not None:

qt_ui/windows/QWaitingForMissionResultWindow.py

@@ -239,5 +239,7 @@ class QWaitingForMissionResultWindow(QDialog):
         self.sim_controller.set_game(self.game)
         for _, f in self.game.db.flights.objects.items():
             f.state.reinitialize(self.game.conditions.start_time)
+        for cp in self.game.theater.controlpoints:
+            cp.release_parking_slots()
         GameUpdateSignal.get_instance().updateGame(self.game)
         self.close()