Okay so I'm a little bit confused on the whole concept of the first one you get will be for your role. Does this carry over for all the difficulties?
What I'm asking here is, I've killed Garrosh on flex, normal, and I'm currently working on a Heroic kill, I've gotten the staff off only flex, but since I've already gotten my role heirloom, any other I get on flex will be random. Does this carry over for each difficulty or is the first one of each difficulty always guarenteed your role?