DontDestroyOnLoad not working after changing parent temporary

Hey I have a specific problem with the DontDestroyOnLoad function for my object. In my project i have level loader and the player object can change scenes without getting destroyed. In one level a have an elevator and the player becomes the children object of the elevator while its inside of it

( the working elevator function: private void OnTriggerEnter2D(Collider2D collision) { if(collision.tag=="Player") { inSwitchArea = true; Debug.Log("in Area"); collision.transform.parent = transform; collision.gameObject.layer = 8; } } private void OnTriggerExit2D(Collider2D collision) { if (collision.tag == "Player") { inSwitchArea = false; Debug.Log("not in Area"); collision.transform.parent = null; collision.gameObject.layer = 9; } } ) After leaving the elevator, its not the children of it anymore, but now the DontDestroyOnLoad(gameObject) isnt working anymore while changing the scene.

I think the parent (elevator) is changing something in the child object (player), but I am not sure what it is and how to fix this. Maybe you have some backround knowledge.

bg, Alex