That's the part of "harmonizing" you will be hearing soon. If you guys have that function, and AA doesn't, well you can figure out what if it will stay or not. They will deem it a not a "core" function of Fleet, and will be eliminated.
Hell, they told us that Cargo wasn't a "core" function and it had to be "harmonized", even though it is a profitable. Now it is in shambles with the vendors.
Compare the functions between both groups (AA/US). If either group has a function that is not a so called "core" function, you can bet that the company will try to eliminate it.
Bank on it!