So, I've been wrestling this one myself today, with no success. The new Fisher Price style interface only seems to show a limited number of options, which means if you want a flight down the previous evening from an airport that has a lot of daily flights, then you can't select it.
Our dates aren't locked in yet, but with various combos, ITAMatrix will find the flights, but BA won't offer anything but the morning options e.g., searching for 4 adults:
While BA.com multi-city only offers 6 options for the EDI leg, all in the morning, including ones to LCY (I specifically selected LHR rather than LON in the interface, it seems not to consider that fact), the last ones being as follows:
With the old interface it would show me
all the options throughout the day.
Gold Line tells me to go away and book it on BA.com (there is an added wrinkle of maybe using an 125 eVoucher, something the old multi-city interface couldn't cope with)
Any way round this impasse? Bremen or Spain call centres maybe? Some trick to force it to the old interface, or to show more options?
Thanks
BertieB