This is what I have. Its only 77.5k for my itinerary. Another data point for a similar situation where they had to cancel the whole itinerary to switch 1 leg of the route. It was a booked out flight with no wait list but the agent was able to cancel and grab all the same flights back instantly. I guess my risk is that the loints might not go back into my account instantly or the seats don't go back into the award bucket.