Layman's understanding: The "nic" is only one part of a "merger package". The arbitration was the result of a stalled "seniority" negotiation and is only "binding" within the ALPA sponsored "merger package" for that merger attempt and only during that time period and only has effect if the package goes through, all the eyes dotted and tees crossed. It holds no weight outside of the ALPA sponsored "merger package".
By your reasoning every contract negotiated by ALPA is no longer valid. Obviously this is not the case. The transition agreement is not a proposal, as you seem to believe (or led to believe by your union) and the Nicolau seniority dispute was carried out as predicated by your merger policy, including "final and binding" as dictated by the transition agreement of which your pilot group is a party of. Abiding by the transition agreement isn't voluntary or discretionary, as your union wishes you to believe. In fact, all parts of it are binding until the integration is completed. So far, we are not one pilot group and the west's legal claims establishes three points to be seen in the courts:
1. the validity of the transition agreement as the governing contract
2. east pilots were a voluntary party to the transition agreement.
3. the west maintains their rights as dictated by the transition agreement to vote as a group for a new CBA.
USAPA glossed over point three in their rhetoric to their masses by assuming they can just modify that component of the transition agreement at will. Contract law says they can't and the west now has an opportunity to test the USAPA hypotheticals in the court system. Based on case precedence, affirming USAPA's position would be a first in our legal system. My money goes with the status quo here.
Representation changes, unlike what your union wishes the masses to believe, does not retroactively negate selective agreements or contracts your party has agreed upon. ALPA was the legitimate representative of the east pilot group at the time of the merger and signing of the transition agreement. USAPA inherited all previous contracts as spelled out clearly by the NMB.
What Marty Harper has brilliantly done is present to the federal courts a complaint which will require judgement and findings reaffirming that the transition agreement in whole is binding governing. Whether monetary damages are awarded is debatable, but the point is to disprove in short order the wishful thinking of the masses out east that contracts can be selectively repudiated at will.