Had four flight segments on March 10 but only 3 of the 4 posted. Ironically, the one that didn't post was the first segment. In addition, I am Premier Platinum but only received a 50% mileage bonus on 2 of the 3 segments that posted. Didn't receive any lifetime miles for the segments from March 10 that posted, but did finally receive Lifetime mileage for flights taken on March 3-transition day. I tried calling Mileage Plus and got a recording that "if you are calling about missing or misposted mileage credit, please allow 48 hours and then check your account again." I guess they already know that this is a MESS!