Booked paid J DFW>LHR>IST on December 25. Would like to reroute to avoid LHR due to the border force strikes. There is an Industrial Action travel alert for LHR on the AA website for my travel date. Called the Executive Platinum desk to ask about being routed through Doha on QR or Amman on RJ because I think there is a lower chance of weather delays or strikes if I go through the Middle East. EP desk says I can only rebook with Business Partners- Iberia, Finnair, or BA. They are encouraging voluntary rebooks for my flight specifically to avoid LHR, but they have no other options that don't go through LHR. (??) Is this a case where I should HUCA or am I stuck? My travel date isn't flexible. Thank you for your advice!