They Key do not return the key expected when replacing or removing a laser. Instead, it returns the new Laser installed with the _DAMAGED attached. It even does this when you remove a laser completely and returns EQ_WEAPON_NONE_DAMAGED
if you try to replace the laser with a laser of the same kind, then it still triggers a EQ_WEAPON_´LASER´_DAMAGED or even a EQ_WEAPON_NONE_DAMAGED when you try to remove a laser from an empty slot.
Additionally it does not trigger at all when you remove a passenger berth or sell all pylon mounted equipment.