Originally Posted by
Zorak
Welcome to FlyerTalk! The above works, but an even easier path is available -- book main cabin and then once it tickets, click change/modify and then pick a new, more expensive flight (in whatever cabin).
Also, FYI the wiki at the top of the thread has further details, caveats, and some other options for utilizing the credit that have been collected from experiences throughout the years.
Thank you so much! I greatly appreciate your response