In all cases that have been removed from the courts of the state to the federal courts, and that have been afterward remanded to the state courts, the pleadings, depositions and proofs that have been filed in the federal court during its pendency there shall be used as if the pleadings, depositions and proofs had been originally filed in the state court. In cases where the original depositions, pleadings and proofs cannot be obtained from the federal court for use in the state court, then certified copies of the original depositions, pleadings and proofs may be obtained from the federal court, for use in the state court, instead of the originals.