So I've always thought this myself, but I've heard differently from a few people and I figure I'd just try to get a definitive answer out of you guys.

For simplicity's sake, lets just say each dot does 10 damage each tick when not used in WM, and when in WM it does 13.

If I were to apply my DoT's outside of WM let it tick once for 10, and then use Iron Jaws, would that then up the potency to 13 per tick upon refresh? or would it continue ticking for 10?