Originally Posted by jsloan

1. In general, yes, and there's no fee. However, you may need inventory on all legs of the trip, including any that you're not changing.
2. I've found Asiana's website to be a challenge in the past. Try all permutations of your name, particularly if you entered a middle name. If you're not able to pull it up on their website, you can give them a call, but if you got an email from UA saying it was ticketed, you're probably in good shape.