Apparently the CC did not consider that the company package would penalise the unit chief pilots. The chief pilot changes were not even on the agenda for the meeting. The amendment was carefully slipped in by the company late in the afternoon. The CC members and the head office rep failed to spot the consequences and the whole package was agreed.
The potential damage has since been notified to the CC. Now BALPA is reluctant to do any thing and will not cancel the members vote.
Some of those chief pilots have paid thousands over the years in BALPA subscriptions. This is their reward!