Except as otherwise provided in the Kentucky Rules of Criminal Procedure, if a witness uses a writing during the course of testimony for the purpose of refreshing memory, an adverse party is entitled to have the writing produced at the trial or hearing or at the taking of a deposition, to inspect it, to cross-examine the witness thereon, and to introduce in evidence those portions which relate to the testimony of the witness. If it is claimed that the writing contains matters not related to the subject matter of the testimony, the court shall examine the writing in camera, excise any portions not so related, and order delivery of the remainder to the party entitled thereto. Any portion withheld over objections shall be preserved and made available to the appellate court in the event of an appeal.