Probate Code § 8272

(a) If it appears on satisfactory proof that the will should be denied probate, the court shall revoke the probate of the will.

(b) Revocation of probate of a will terminates the powers of the personal representative. The personal representative is not liable for any otherwise proper act done in good faith before the revocation, nor is any transaction void by reason of the revocation if entered into with a third person dealing in good faith and for value.