1 Pa.C.S. § 1975

Whenever a limitation or period of time, prescribed in any statute for acquiring a right or barring a remedy, or for any other purpose, has begun to run before a statute repealing such statute takes effect, and the same or any other limitation is prescribed in any other statute passed by the same General Assembly, the time which has already run shall be deemed part of the time prescribed as such limitation in such statute passed by the same General Assembly.