I sided with the drifter in the Allegiance quest line but when I got to the step where I had to complete a special reprise of the Thief of Thieves adventure on Titian, there was no marker to start the quest at. I tried several times but couldn't find how to start the mission. I thought it might be bugged and if I abandoned and recovered the quest it would trigger. but after I abandoned the quest it does not appear at the Drifter. How can I recover the quest?