Do you have a recent inquiry as a result of getting the 0% APR card?
Is that card relatively new?
You will take a temporary hit if that's the case, probably lasting a few months.
Also, if your credit utilization on that new card is higher (not total, but just that card), you are probably penalized for that too.
At any rate, like the person above said, you should be at least somewhat recovered once the other card reports balance paid.
This is not the fault of the CRAs, it is the fault of the CC issuers. They like to report new large balances on their cards soon, so your score will take a hit, so you will be stuck with them.
As usual, in a case like this it is better to have a larger credit line than smaller.