This is a bug that I repeat every 3 nights, if you log on at around 3am EST (other times/zones may work as well just generally around when resets happen) you can change quests indefinetely. I have been logging on every 3 days at 3 am and then cycling each quest until it is total dominance x3 for 100 gold each to do this I usually "abandon" each quest 20+ times and then complete them when I wake up and they don't revert back to their original quests or anything to that nature. Sorry if this is posted in elite or anything as I do not have access to that forum.