BA have simply had approval from the trustees, that their proposal will solve the deficit to their satisfaction. Nothing more.
BA still have to get it past the unions, and that just isn't going to happen.
So eventually, BA will have to go back to the trustees with another proposal, and the trustees will approve that one instead.
It is unfortunate that BA did not go to the trustees with BALPA's proposal, because they will have to go through the process all over again now - and possibly with strikes in the interim.
Either way, the BALPA proposal will be submitted to the trustees at some point, because we ain't budging.