All agreements or contracts under which any person, organization or corporation is delegated management duties or control of any domestic company, or which transfer a substantial part of any major function of a domestic company such as adjustment of losses, production of business, investment of assets or general servicing of the company’s business must be filed with the Department on or before the effective date of such contract or agreement. The Director may upon notice review these arrangements entered by foreign companies.
     There shall be exempted from the filing requirement of this Section contracts by groups of affiliated companies on a “pooled” funds basis or service company management basis, where costs to the individual member companies are charged on an actually incurred or closely estimated basis. However, these contracts must be reduced to written form.
     Sections 141.1, 141.2, and 141.3 shall not apply to any power of attorney or other authority authorized by Section 67 of this Code.