Disappearing armament of aircraft/chopper (In vanilla and many other mods)

[Khun]

Some of you might not notice that the armament object of most aircrafts and choppers like missile guided-unguided bombs disappeared after it was fired from the 1st time and continued to disappear after it was refilling from the airfield/carrier. The shooting process has no problem but only the weapon object disappears from the vehicle. This problem does not occur if we change the number of magazines from 1 to 2 or any numbers in ObjectTemplate.ammo.nrOfMags 2 that after the first stage is fired out, the mag will reload and the missile/bomb object will reappear again. This problem happens the same in many mods or even in the vanila game.
My question is how to make it reappear after refilling the ammo from the base like airfield/carrier without changing the number of ObjectTemplate.ammo.nrOfMags originally from 1 to 2,...?
Does anyone know how to fix these?