ADBA/Sporting dog/ BFK Conflict

So why is CGD Jethro listed Ponte's Megadeath on ADBA and SDR?

Ponte's Megadeath is his name and Jethro is his call name. Not sure how it came about. The puppy I had was listed as off of Megadeath (ADBA) when I converted him to BFKC it was the same. EWO

Thanks tried to call Jeff but no answer