Rang BA Holidays this morning (there's a hotel in INV at the start of the booking so they're technically in charge). Spoke to a lady that I've spoken to before who advised me that they've been told internally not to rebook the long haul legs on CX and MH as an agreement is still being negotiated. Agreed to leave it for a few days as I'm in WT+ and there aren't any particularly great options at the moment.