When Does The Cafax Change After The State Has Corrected A Title Error?

We were trying to purchase a car, trading our current car in to the dealer. The carfax found an error in the title, the original dealer had put in the wrong mileage. We have obtain affidavits fron the original dealer documenting the correct mileage and the bank has sent the title to the state to issue corrected title. I called the state office yesterday and they confirmed that the title error has been corrected. the new title is being sent to the bank. When can we request a carfax that would show the correct mileage? The car we want to purchase is still available at this time.Thanks Ed Meier