Section 4-604 - Trustee under federal retirement acts(a) In this section, "federal act" means: (1) The federal Self-Employed Individuals Tax Retirement Act of 1962; or(2) The federal Employee Retirement Income Security Act of 1974.(b) A savings bank may act as trustee of a plan under either federal act, as provided in this section.(c) A savings bank may: (1) Accept a trust under a plan that: (i) Constitutes a qualified plan under a federal act and the rules and regulations adopted under it; and(ii) Requires the exclusive investment of trust funds in deposits of a mutual savings institution; and(2) Continue as trustee of a plan that is determined not to be or ceases to be a qualified plan, if, when the savings bank accepted the trust, the savings bank judged the plan to be a qualified plan.(d) A savings bank that is acting as trustee of a plan under a federal act: (1) May integrate the trust funds with its other deposits; and(2) Shall keep appropriate, detailed records of all transactions in which it engages as trustee.