need help. xferred horde and legendary ring quests dropped.

I transferred horde to join an old guild and the quest for my upgraded ring is gone. I tried to start the quest line over as if I was lvl 90 doing it for the first time. I just completed the quest when khadgar asks you to go spy on goldan. after this quest there are no other quests available around him. Is there another quest line I need to do?

Also is it possible since I'm so far along with abrogator stones that I can ticket this to pick up the quest again?

thanks <3