I took a flight this week where I was upgraded. When the miles posted, I got the 100% RDM bonus twice. I assume this is just an error and not because I was upgraded? What's the chance that those miles will stay in my account? Has this happened to anyone else?

I wouldn't want to use those miles and then have them try to take them back out of my account... once they're in the account, do they ever take them back?