Originally Posted by gleff
It absolutely works. I've done it myself. My most recent experience is 7 days CO --> Amtrak.
Amtrak transfers allow you to move pretty much any airline into United miles.
YX: transfer your miles -->; Amtrak --> United.
How do you transfer the Midwest Express miles into Amtrak Guest Reward points? I don't see any redemption options on Midwest's website that would provide this? The only 5,000 rewards I see are actual round-trip train trips.
I'm cross posting this to the Midwest Forum as I believe the answer may come from either location - shoot me.