I've searched the forums and found numerous information given towards gear, reputation, flight paths not unlocked and so on and so forth when using faction change. But what about Quest progression? Is that saved? Will the quests be converted to the Alliance-equivalent? What about Karazhan-Attunement? For Instance, i've done the whole Q-Chain for Karazhan up to "The violet eye", so i do have the masters key. Will i have to do that over again?
Only both-side quests and both side reputations both side fly paths are saved. For example if u did quests in Thrallmar u won't have any completed in Honor Hold and reputation there starts on 0.