My brother and I bought the entrenchment expansion to play together. He bought both copies and gave me one of the keys. Flash forward a year later my computer died and I got a new one. When I go to install with Impulse I see that I don't have entrenchment listed anymore, so I talked to my brother and it says he has two copies of entrenchment under his account. Is there any way he can recover the serial key, or get the registration for one moved over to my account?
