Just for clarity Amicus/CC89 cannot hold a separate ballot for IA or anything else it is a single workplace for cabin crew.
The same applies to BASSA if one group holds a ballot it must include all members in that workplace and this has been tested in law.
All they can do is tell their members to vote no, which is what they have doneand if the result is yes then it will be applied to ALL members regardless.
BA will not ask to see who voted yes or no and then apply different settlements it is after all a secret ballot.