Can someone with Aeroplan 25K or higher "table" Jan 2024 expiring eUpgrades by doing the following? Book a Premium Economy (Flexible) or Latitude ticket for May 2024, then either change or cancel that ticket after Jan 2024 flight to somewhere else in the world? I'm curious if the eUpgrades being available anytime and therefore having an instant upgrade would make those eUpgrades return to your account? Or would the system know that the eUpgrades you used to book that flight, and just disappear them as soon as you cancel or change that booking?