OnTriggerEnter triggers twice when changing the parent of a gameObject inside of a collider.

I've noticed that when I change a gameObject's parent inside of an isTrigger collider it triggers the OnTriggerEnter function again. Is there possibly some option to change this? Or possibly some way to mimic the behavior of a child object without actually parenting it to another object, (but still allowing it to move like a rigidbody parented to a gameObject)?

The gif below shows you what kind of behavior I'm looking for. Notice how the red ball has a rigidbody and is parented to the cube but still has its position updated by the cube in various ways. I'm looking to do this without actually parenting the red ball.