Amtrak discontinued the "Keystone" on April 30, 1972, leaving the 600-series trains as the only local service along their route. The "Broadway Limited" and "National Limited" were split; they added local stops west of Harrisburg, but passengers from between Harrisburg and Philadelphia had to change trains at Harrisburg, Lancaster, Paoli, or Philadelphia to reach stops west of Harrisburg or north of Philadelphia. On October 28, 1973, Amtrak changed the weekday-only Valley Forge from a Philadelphia–New Haven local train to a Harrisburg–New York City train. It only made the same intermediate stops as the "Keystone", including no direct service to 30th Street Station. However, its introduction meant that through passengers no longer had to change at Philadelphia or rely on the "Broadway Limited", whose on-time performance had plunged to just 6.8% in 1973.