I just picked up a Launch Pro tool and took a DPF reading of my '11 2500. I am confused by the mileage readings. Both the 'Driving distance since last successful particulate filer regeneration' and 'Mileage at last particulate filter regeneration' are the same. On top of that both are higher than the actual mileage. What am I missing here? In case it matters, the DPF and SCR were both replaced a few hundred miles ago and a local shop did a relearn on both.