ok at first im 200% sure i had done the Succubus questline before, hey im a lvl 78 Warlock and i used my succubus much times before...
I dont realy know what exactly happened but it looks that some low lvl quests you already have done are back or so.
I had my lvl 78 up yesterday and was today on the way to the warlock trainer in ogrimmar, in the small backway to the cleft of shadows is the npc wich starts the succubus questline (for orgrimmar) and i KNOW from 70-77 they dont gave me a quest (you see it at the minimap) but today there was a "!" and to my suprise the npc give me the succubus questline i completed YEARS ago!
And because classquests are at your lvl, this simple travelquest give exp like lvl 78 ones or so! 75600 in total.
some screens:
btw: sorry for the colored edges, they are for my bot ^^
i found also a other quest i had done before and now are back:
i looks that the 3 pre quests for runecloth to reputation are back in every town and i surely had done them before, im exalted everywhere...
and another REALY strange thing: Yesterday i got my 2000 Completet quests archivement and also had done some quests after that.
Today as i looked to the archivements it still had the 2000 BUT the 3000 shows only 1998/3000 WTF? Then i have done the Succubus questline and was on 2015/3000 (but the questline have only 6-7 quests) AND now i looked in again (traveled to uc) and i have 2004/3000...
What the hell is going on here?