Originally Posted by
ijgordon
This is incorrect advice and would best not be heeded. Scanning tickets from an envelope is not how CO knows whether or not you traveled on a CO codeshare segment operated by Amtrak. Read the ZFV thread; there are some nuances.
Agreed. Had a friend's return trip cancelled because he didn't utilize the Amtrak codeshare. This was in late March.
climbguy's advice ignores the fact that the systems know that the Amtrak train segment was never printed out at 30th street station.