(a) A custodian may deposit with a permitted institution an investment security the custodian holds under Section 2257.041.
(b) If a deposit is made under Subsection (a):
(1) the permitted institution shall hold the investment security to secure funds the public entity deposits in the depository that pledges the investment security;
(2) the trust receipt the custodian issues under Section 2257.045 shall show that the custodian has deposited the security in a permitted institution; and
(3) the permitted institution, on receipt of the investment security, shall immediately issue to the custodian an advice of transaction or other document that is evidence that the custodian deposited the security in the permitted institution.