Prior to 5.8 Weekly and Heroic missions included in conquest counted as many times per legacy as you had characters able to run them, which is no longer the case. Therefore, if Black Hole were part of conquest in a given week, I could run it once per character and have it count for each of them. Now, a weekly counts only once per legacy. If Nar Shaddaa heroics were part of conquest, I could run all of them on a character in a single day and have all of them count, and I could do the same thing on as many other characters as I had, provided I had the free time. Now, only one heroic per day counts across the entire legacy (with the only exception being the "reset" bug, which may or may not have been fixed). So no, it has not been that way since they introduced conquest, and that is why some of us are "throwing a fit about it."