CAL ALPA's scope should remain in force, even in the event of a merger...unless they sell that, which I doubt.

One could reasonably surmise that *if* this merger happened a joint UAL/CAL ALPA CBA would allow no more than the currently contracted number of 51+ seat "regional jets" currently flying under the UAX banner. No growth in those airframes at the combined carrier, and once signed contracts expire those airframes would go away.

Mergers are the only way mainline pilot groups will be able to reclaim the scope they have previously sold...and will likely also be a tempting time to sell more to achieve greater pay/retirement gains. I hope they've all learned from recent past...