I’ve got a tag on question to this if that’s ok- if QF schedule changes you to the extent that the fare is now Eligible to be refunded, is there a time limit in which one is able to wait to decide?

i booked EK F MXP-JFK on QF points and got downgraded to J from an equipment change which leads me to no longer want to fly this itinerary - I’m hoping to hold out for them to re-upgauge the flight back to a plane with F and just move me back but am unsure if I should just cancel and refund it and wait for the long refund process and chance no F space comes around or sit on it until closer in (Mar 2021).

also it seems from OP that if I wanted to request MXP-DXB-JFK in F as an alternative that they would have to call in to request space be opened