Middy, you are prob correct i saying the only people who can answer this is IFCE, though what License to Fly states ia also probably true, that this enables BA to pick which crew they actually want on MF.
What is confusing is that both sets of temps, both ex and current are being treated differently!!
Anyway, im sure the right people who have the passion for MF will be successful so its all irrelevant in the long run!