53 Pa. Stat. § 177
In all cases of the annexation of any city, borough, township, or part of a township, to a contiguous city, under the provisions of an act of assembly, approved the twenty-eighth day of April, Anno Domini one thousand nine hundred and three, entitled "An act for the annexation of any city, borough, township, or part of a township, to a contiguous city, and providing for the indebtedness of the same," all rights of creditors and all liens, and all rights of the municipality so annexed to enforce the payment of moneys due, or of contract liabilities, or of other claims or rights of property, existing at the time of such annexation, shall be preserved unimpaired to such annexed city, borough, or township; and such city, borough, or township, for the purpose of enforcing its rights and claims in the premises, and also of having prior rights and claims enforced against it, shall be deemed in law to continue in existence.
53 P.S. § 177