I spent some time balancing my miles on Quicken on Sunday. It seemed that my UA flight last Monday is included in the total transferred from MP but not listed as a transaction.
Friday's flight home has not posted yet. Maybe when it is, I will also see some of the zero outs others are reporting (right now, things look OK on my account.
As far as the reduce miles....Since we are on CO's system, CO's mileage measurement applies. I guess someone high up has to make a decision whether to switch to the older UA measurement or stay with the CO.