WineCountryUA:
Yep on future credit: from my understanding reading the forum, it was either get original miles OR get refund. So I opted for the former.
However, since my flight was cancelled, I got an email from UA directing me to their customer appreciation site. After putting in my info, I had to choose between 20,000 regular miles, $500 future credit on domestic flights, or 10% discount on future purchases. I took the future credit.

All things considered, this worked out as well as could have been expected ^. So kudos to UA