Last weekend they rebooked me automatically for a September flight . I was originally scheduled SIN-NRT-SEA-LAX all in D1. My new routing is SIN -PVG on MU J class then D1 on Delta direct PVG-LAX. Other than the unknown of MU J class I cannot complain because I keep the a359 suites on a direct flight to LAX. They should re route you soon .