Can confirm the following after a good 4-5 hours on the phone
Originally wife was booked in F and I was booked in J EK's (SIN-MEL) on seperate booking references
No EK flights were available after trying to initially get SIN-DXB-MEL, QFF booking specialist said they have been given a set of instructions on how to accomodate the passengers and the options are either be moved to a QF flight or cancel booking and receive refund/ return of points.
QFF booking specialist was insisting on re-booking us on QF (MEL-SIN) but ended up getting us on the A380 (SIN-SYD-MEL) with the wife booked in F & J (domestic) and myself in J for the entire trip.