After the problems I had with F-35s readying (see the "F-35's stuck in ready cycle" thread, Operation Brass Drum, Build 490) I launched one F-35 from LHA 6 America, duplicated it five times, and sent the aircraft up the Gulf towards their target. A few minutes later I noticed all the new ones had turned around and were headed south again, RTB Bingo-ing to Diego Garcia!
It seems that the duplicate command did not copy the base assignment (LHA 6 America) of the original aircraft. I'm not sure if that's the way its supposed to work, but I can't imagine wanting to do individual base assignments for dozens of aircraft when building a scenario instead of just cloning.