Qualification by a court of a testamentary trustee is not required before distributions can be made by a personal representative to the trustee, unless qualification is expressly requested by will or demanded by an interested person as follows:
(1) by written demand delivered or mailed to the personal representative, or
(2) by petition to the court having jurisdiction over the probate estate.
If demand is made, the personal representative shall require proof of qualification of the trustee in a court of competent jurisdiction and the personal representative shall not make distributions to the trustee until the trustee is qualified by the court.
This section applies to all testamentary trusts without regard to the date of execution of the will or to the date of death of the testator.