In the information regarding timewalking Burning Crusade there is a portion talking about quests.
“Chronicler Shoopa in Zuldazar or Chronicler Toopa in Boralus has a quest for you has a quest for you. Or if you forgot to pick it up there, you can start it from within the Adventure Journal”
I don’t think the bold portion is meant to be repeated, but it is in the post on the website.