Hello all, I have a business trip planned in a few months going from MSP-ORD-CDG and back. I booked this on Delta's site using Delta for the MSP-ORD leg in F and ORD-CDG on AF (Delta flight #) in premium voyageur. I do not have status with DL or AF, but I will have around 100K Skymiles around that time. How/when could/should I go about upgrading to affaires? Thanks!