The AOAC CBA cannot contravene laws of another country! I guess we will see what happens, but I have a pretty good idea that CX does not want to pay immigration fines, and deal with the other consequences (it would be hard to make AT a sim instructor with her experience);and it is for more than 10 FO's, btw.
Long story short, go to BA if you have the chance, otherwise deal with this bunch of baboons the rest of your career (and I mean the pilots who think they are above the law). Hopefully, this diatribe has proven it is time to move on if you have the opportunity, and that bases are used solely to degrade COS's.