To resolve the differences in aspirations BALPA arranges a meeting between the BACC and the bmiCC: they act as brokers / intermediaries.
The negotiations go to and fro: BA want the bmi crews in at the bottom of the list: the bmi crews want integration based on seniority.
Outcome: the BA view prevails and the bmi pilots all go on to the bottom of the list with the proviso that a fleet change for an existing bmi Captain means a seat change and re-role as an FO.
Except that, the bmiCC get the transfer to the fleet they want, in their current rank and keep it sine die.
BALPA sign up the whole shebang and announce everyone is happy with the concluded negotiated position.