The quest in 1.0 was "United We Stand" and was part of the Grand Company quest line. It was the quest prior to fighting Nael van Darnus.

Quote Originally Posted by KaiDennDalk View Post
Well, this is huge disappointment, mostly considering we could have done something about it had we knew one year ago...
If you were honestly interested in the game during the time this quest was available you would have been playing it. They probably didn't even have this planned in their development cycle before 1.0 shut down to give an alternate opening.