53 Pa.C.S. § 8027

Notwithstanding anything in other law or in this subpart, this subpart shall not be construed to invalidate any debt which was lawful when incurred or which could have been lawfully incurred if this subpart had been in effect, whether incurred before or after the passage of this subpart, and the percentage limitations set forth in section 8022 (relating to limitations on incurring of other debt) shall be deemed increased to the extent necessary to cover such incurred debt. This subpart shall not be construed to subject any debt incurred and voted upon prior to July 12, 1972, as electoral debt to any of the limitations herein imposed by this subpart on nonelectoral debt.