@Embodied: Whether it vanishes or disappears, it is the same thing.
Let me repeat the two important questions that I raised above. Do you understand why:
1. A LIVING Arahant is subjected to kamma vipaka DURING his/her life.
2. No kamma vipaka will come to an Arahant AT or AFTER his/her death.
This is done not to embarrass you or anyone else, but to get to the right question and then to answer. This could be the same issue that “y not” asking about. I am not sure. I just want to clarify the question before answering.