(a) All reports, files, records, and papers of whatever kind relative to the supervision of probationers by a private corporation, enterprise, or agency contracting under the provisions of this article are declared to be confidential and shall be available only to the affected county, municipality, or consolidated government, the judge handling a particular case, the Department of Audits and Accounts, or the County and Municipal Probation Advisory Council.

(b) In the event of a transfer of the supervision of a probationer from a private corporation, enterprise, or agency to the Department of Corrections, the Department of Corrections shall have access to any relevant reports, files, records, and papers of the transferring private entity. All reports, files, records, and papers of whatever kind relative to the supervision of probationers by private corporations, enterprises, or agencies under contracts authorized by this article shall not be subject to process of subpoena.