Before defeating the boss in the "Transient" mission I was kicked. My fire team finished the boss before I got back in. And I joined while the countdown was going on to end the activity. The quest didn't count for me so I am still on step four, I tried to go back to restart the quest but there is no prompt to start the quest. I've tried abandoning the activity, leaving the area coming back, quiting the game and coming back to no avail.