I believe to minimize the impact, say for instance 300 AMT s slots are being dissolved by station closure or downsizing.. The juniorty date for the system 300th AMT is the cut off point.. At that point you inventory the available stations with slots below that seniority date and make these choices available to the senior AMT that is being displaced.. Continue the bump process until you reach the equilibrium of 300 slots.. It's not perfect but it also would eliminate a system rebid to pacify the whiners..