73 Pa.C.S. § 103

If a township of the second class is designated a township of the first class, or if a township of the first class is reestablished as a township of the second class, all liabilities incurred, rights accrued or vested, obligations issued or contracted and all suits and prosecutions pending or to be instituted to enforce any right or penalty accrued or to punish any offense committed before the change of class, and all ordinances, resolutions, rules and regulations shall continue with the same force and effect as if no change had been made.