The experimentally observed magnetically induced dynamics of the anodic arc region of an argon arc discharge are presented for Lorentz and retrograde motion. The same externally applied conditions were employed for both modes of motion. The anodic arc region proceeds in the Lorentz direction through the formation of anode arc spots on the Lorentz side of the arc discharge. During retrograde motion, a new anodic arc region is created on the retrograde side of the original anodic arc region by a discharge initiating between the anodic and cathodic arc regions. The separation of the positive column and the original anodic arc region during retrograde motion results in an anodic arc spot where the original anodic arc region existed.