The Johnson Line is not used west of the Karakoram Pass, where China adjoins Pakistan-administered Gilgit–Baltistan. On October 13, 1962, China and Pakistan began negotiations over the boundary west of the Karakoram Pass. In 1963, the two countries settled their boundaries largely on the basis of the Macartney-MacDonald Line, which left the Trans Karakoram Tract in China, although the agreement provided for renegotiation in the event of a settlement of the Kashmir dispute. India does not recognise that Pakistan and China have a common border, and claims the tract as part of the domains of the pre-1947 state of Kashmir and Jammu. However, India's claim line in that area does not extend as far north of the Karakoram Mountains as the Johnson Line