Howdy Folks. I’ve looked into wowhead comments and this is what I found.
This one is the skip quest with the same name. Apparently it’s busted. You can read theonly comment going back to August.
This one says:
If you ended up here trying to complete “A Creche Divided” on an alt for the “Embers of Neltharion” achievement, Fly out to the Forbidden Reach and go to about 76, 37 on Dragonskull Island.
Scalecommander Emberthal is over there with the quest “Return to Viridia” and that is the quest that you need to turn in so that you can obtain the “A Creche Divided” achieve.
The achieve is awarded upon turn in.
Try that and see if it works. I can’t check since I’ve done it already.
Cheers.