I haven't read Miller's journal article yet but I always considered a pure Miller A to be a storm that developed from a low originating in the southern stream, travels through the southern states or gulf and eventually redevelops off the coast from Georgia to NC. If the low traveled up to Tennessee or Kentucky before transferring to the coast I considered it a Miller B hybrid. A Miller B originates from a low in the northern stream, and when reaching Ohio, Kentucky or the Tennessee area, transfers to the coast from SC to NJ.
Now I'll read the journal article and see how wrong I am. lol