Tenn. Code Ann. § 45-10-116

In view of the property right of the financial institution in its records, original records may be withdrawn after introduction into evidence and copies substituted, unless otherwise directed for good cause by the court, judge, officer, body or tribunal conducting the hearing. The custodian may prepare copies of original records in advance of testifying for the purpose of making substitution of the original records, and the reasonable charges for making the copies shall be taxed as costs of court. If copies are not prepared in advance, they can be made and substituted at any time after introduction of the original record, and the reasonable charges for making the copies shall be taxed as costs of court.