Question for the experts on expiring SWUs. I have one due to expire at the end of Feb. I don't have anything good to use it on in 2025, but would have some use for it in March 2026. Can I find confirmable SWU space in 2025, buy a ticket, and then change the dates once the 2026 schedule is released (assuming I can find a 2026 flight with C space)? If so, does it matter what route? What I would like to do is buy a route like JFK-LHR that is confirmable now, then swap to JFK-XXX later if/when something opens up for March 2026.