When all of the enemies in a room dies the doors dont open.

In the last section of this code the

 else
                 {
                     foreach(Door door in room.GetComponentsInChildren<Door>())
                     {

always is zero and I can't figure out why. each cycle of the foreach loop above it decreases the door count by one but when the loop is exited it doesnt reset for some reason.

 public void UpdateRooms()
     {
         foreach (Room room in loadedRooms)
         {
             if (currRoom != room)
             {
                 EnemyController[] enemies = room.GetComponentsInChildren<EnemyController>();
                 if(enemies != null)
                 {
                     foreach(EnemyController enemy in enemies)
                     {
                         enemy.notInRoom = true;
                         aIDestination = enemy.gameObject.GetComponent<AIDestinationSetter>();
                         aIDestination.target = enemy.gameObject.transform;
                     }
 
                     foreach(Door door in room.GetComponentsInChildren<Door>())
                     {
                         door.doorCollider.SetActive(true);
                     }
                 }
                 else 
                 {
                     foreach(Door door in room.GetComponentsInChildren<Door>())
                     {
                         door.doorCollider.SetActive(true);
                     }
                 }
             }
             else
             {
                 EnemyController[] enemies = room.GetComponentsInChildren<EnemyController>();
                 if(enemies.Length > 0)
                 {
                     foreach(EnemyController enemy in enemies)
                     {
                         enemy.notInRoom = false;
                         aIDestination = enemy.gameObject.GetComponent<AIDestinationSetter>();
                         aIDestination.target = GameObject.FindWithTag("Player").transform;
                     }
                     
                     foreach(Door door in room.GetComponentsInChildren<Door>())
                     {
                         Debug.Log(room + "a  " + room.GetComponentsInChildren<Door>().Length);
                         door.doorCollider.SetActive(false);
                         Debug.Log(room + "b  " + room.GetComponentsInChildren<Door>().Length);
                     }
                     Debug.Log(room + "c  " + room.GetComponentsInChildren<Door>().Length);
                 }
                 else
                 {
                     foreach(Door door in room.GetComponentsInChildren<Door>())
                     {
                         door.doorCollider.SetActive(true);
                     }
                 }
             }
         }
     }