The job savings was from reduction in outsourcing allowed under scope. The future aircraft work will go down but when it comes back up due to aging aircraft so does the associated jobs that go with insourcing 65% of maintenance spend. So jobs were saved in the near term in that fewer jobs were outsourced under the new scope clause and fewer jobs will outsourced under the maintenance spend cap in the future when the A320s, 787s and new 737NGs.
Keep in mind, under any scope clause if planes are new, they don't need an overhaul for at least six to seven years. That being said, you can't protect work that isn't there.