Okla. Stat. tit. 58, § 58-741: Reversal for error does not affect lawful acts

When the order or decree appointing an executor, or

administrator, or guardian, is reversed on appeal for error, and not

for want of jurisdiction of the court, all lawful acts in

administration upon the estate, performed by such executor, or

administrator or guardian, if he have qualified, are as valid as if

such order or decree had been affirmed.