Originally Posted by railroadtycoon
you will keep miles or similar status on another airline, historically like TWA miles were moved over to AA (not sure the exact details) .
When AA acquired TWA all TWA miles were merged into ones AA account (got me a free first-class roundtrip to Mexico
).
As I recall it was a very seamless process that went very smoothly.
I can't say the same about my USAir/America West accounts, this merging seems to be a bit chaotic and is taking a long time.