I took advantage of this summer's promo to get enough Avios for a very specific redemption, namely CLT - TUS on AA in Y, in late January.

I booked three tickets, where both flights were non-stop CLT-TUS and TUS-CLT.

AA then changed its schedule. It no longer operates nonstops from CLT-TUS, and the only non-stop from TUS-CLT is a red eye, which isn't going to work for me. AA then rebooked us on an itinerary that looks like this: CLT-PHX-TUS, TUS-DFW-CLT.

When I visit My Bookings on the Iberia site, it asks me to accept these itinerary changes. I have not done this.

As it turns out, one member of my party cannot travel with us. I would like to use the Avios that I would have used for her ticket so that the remaining two of us who are traveling can fly in F in one direction or the other. There is award availability, and assuming that all of the Avios are redeposited, it would come out almost exactly the same.

So, what happens if I do not accept the itinerary changes? Are my Avios redeposited instantly and trip canceled? If not, how long does it take for Avios to be redeposited? Will they try to charge me a fee for redepositing Avios, even when the reason for cancelation is a schedule change?