Originally Posted by
jimmyb88
.....If I book via BMI, will I be able to use a SWU in advance given it is United metal? If I call up United 1K desk, will they help me out, or will they re-direct me to BMI customer service?
No. You can only upgrade codeshares at the airport, not in advance. Not a big deal as most of my SWU upgrades clear at the airport anyway.
