Mo. Rev. Stat. § 492.410: Evidence preserved in bill of exceptions may be used, how.

Whenever any competent evidence shall have been preserved in any bill of exceptions in a cause, the same may be thereafter used in the same manner and with like effect as if such testimony had been preserved in a deposition in said cause, but the party against whom such testimony of any witness may be used shall be permitted to prove any matters contradictory thereof as though such witness were present and testifying in person.