I was in a group for Kara and we made our way up to the Prince. Our Leader/Tank left the group and the other 8 people also ditched.

I was wondering, if I were to make a new raid group, could we simply walk straight up to the prince with everything dead as long as I was the leader until it resets? Or would I have to do it all again?

(Keep in mind this is 3.02 and information you offer up may have changed. Please ensure you at least know your right. :3)
So based on your responses, if ANY of us finish the raid then it will finish it for all of us? Say someone had just completed it now, it would be finished for me as well?