They are probably stressed from the move--I had one breeding male take 6 weeks to start eating after I brought him home. And it was JULY. Let them settle in. As said above, they're already a good breeding size, and it might be several weeks before they're acclimated.
(While I would certainly separate them during feeding, I would not house them in separate enclosures until they start eating again--in my experience, it's not living together that stresses ball pythons, but any change from what they're used to. But do feed them separately.)