I have one question about using miles and evouchers. If I managed to upgrade a flight operated by LHG and 220-stock ticket using miles and only subsequently receive evouchers, would M&M agree to refund the miles and apply the evouchers instead for the same upgrade. My last experience on this is from 2018 when I managed to do it as SEN, but I imagine such flexibility of M&M might be long gone by now.