They'll either notify you that you need to complete another medical or it will revert back to "You've passed your medical exam."How can you say that you've your medical is exempted. Mine expired back in August which lead to a ghost update followed by the change in status from "You've passed your medical exam" to "You don't need a medical at this point".
The officer reviewing your file will see the medical has expired and can send it to be reassessed by a medical officer. The medical officer will determine if you need another exam or if the previous results can be extended.