With respect to any issue of revenue refunding securities to refund securities issued under current law or any predecessor provision, the Authority will not ordinarily require the issuance of a new certificate of approval where there is no expansion of the project and no increase in the outstanding principal amount of the securities unless such issue would require an allocation of the state ceiling on tax-exempt bonds pursuant to chapter 13 of the Authority's rules.
99- 346 C.M.R. ch. 12, § 10