It depends. They earn the higher of their last pay rate at UAL or their CAL longevity rate and it all depends on where the curves meet.

For example, pilots that spent 8 months on probationary pay prior to furlough at UAL essentially start the clock over again and they won't get a real raise until they finish a full year at CAL and go to the CAL 2nd year rate.

Hopefully the JCBA addresses this, but without details nothing public is known.