They put the additional rewards into new spots. So you get those. I completed it this morning (about 2 hours ago), and just saw the message. Followed the directions and just took over everything on the map except strongholds. Got some nice packs for little effort.
My question is, do I have to retake all the strongholds and finish the map in order to get the XP? It says that it gave the 30k XP already, but SDS is being vague about this for some reason.