Originally Posted by
terencelai
I was being told otherwise when I booked it, as long as not shifting from one reward category to another, no routing change, no flight change, a simple replacing Y with a J seat on a business cabin reward ticket will not cause or trigger the whole itinerary to reprice with the new program structure, but if you said the Aeroplan agent is wrong, I will take your word.
It is possible that a change of that nature will not reprice. No one knows for sure yet. But you won't be able to switch dates/flights to get J.