 The San Antonio-San Diego Line was not absorbed by the Butterfield line but on December 1, 1858, the portion of the route between El Paso and Fort Yuma was cut from the service because it duplicated the service of the Butterfield Butterfield Overland.The service from San Antonio to El Paso and from Fort Yuma to San Diego was improved from semi-monthly to weekly trips and its subsidy was increased.During the year 1860, the west end of the route from Fort Yuma to San Diego was ended, leaving nothing but the portion from San Antonio to Camp Stockton which was put on a weekly basis.