Could someone explain briefly how the Eagle flow works? Namely when they flow, do the HAVE to come over in seniority order? Let's say pilot A is senior to pilot B at Eagle. When their number comes up to flow, could pilot A decide to bypass a class and stay at Eagle while pilot B flows over to AA? And then if pilot A decides on the next class to flow, will he be senior to pilot B that flowed over first?

I guess the real question is do they already have a set seniority number at AA (like a ghost number), and will be senior to certain pilots when they flow, even though some of those pilots may have actually been on the property first?