I think it should start at lvl 1 again when you unlock the job. I can understand if it a 1-1 but since they are going to be branching off 1-2. . I think when they come out with new jobs, just have the new jobs by themselves. Like for instance need a lvl 30 war and lvl 15 lance to unlock samurai. To me it defeats the purpose of a lvling game if I lvl 1 job that lvls everything that branches to it.