Let's do a bit of lateral thinking here.
BASSA know the CC don't want a paycut. They offer to BA the paycut proposal, hoping that BA accept (subject to acceptance by CC).
BASSA do the vote for acceptance of a pay cut (drags on for a month)
Lo and behold, CC reject the pay cut. Back to square one!
BASSA have managed to drag it out without having to commit to a strike immediately.
So what happens after that scenario? Do you honstly think BASSA would have thought that far?