(a) Before a claim the evidence for which is lost or destroyed is approved, the claim must be proved by disinterested testimony taken in open court or by oral or written deposition.
(b) The allowance or approval of a claim the evidence for which is lost or destroyed is void if the claim is:
(1) allowed or approved without the affidavit under Section 1157.006; or
(2) approved without satisfactory proof.
Official text of the Texas Estates Code as published by the Texas Legislative Council.