In lieu of the procedures set forth in Rules 13.02 and 13.03, an attorney ceasing practice or planning for the cessation of practice ("appointing attorney" for purposes of this Rule) may voluntarily designate a Texas attorney licensed and in good standing to act as custodian ("custodian attorney" for purposes of this Rule) to assist in the final resolution and closure of the attorney's practice. The terms of the appointing documents, which shall be signed and acknowledged by the appointing attorney and custodian attorney, may include any of the following duties assumed:
The custodian attorney shall observe the attorney-client relationship and privilege as if the custodian were the attorney of the client and may make only such disclosures as are necessary to carry out the purposes of this Rule. Except for intentional misconduct or gross negligence, no person acting as custodian attorney under this Rule shall incur any liability by reason of the actions taken pursuant to this Rule.
The privileges and limitations of liability contained herein shall not apply to any legal representation taken over by the custodian attorney.
Tex. R. Disc. P. 13.04