Europe Stoxx 600 Index erased earlier losses and U.S. futures extended gains after China reported a sharp rebound in March exports even as imports shrank for a fourth straight month and at a sharper pace, painting a mixed picture of the economy as trade talks with the United States reach their endgame. Export growth rebounded significantly to +14.2% yoy in March,the strongest growth in five months and well above consensus expectations, and up from -20.8% year-on-year in February, primarily on the Chinese New Year distortion. Shipments picked up around 3% month-on-month, suggesting some improvement in foreign demand, Julian Evans-Pritchard, senior China economist at Capital Economics, said in a note. But he said exports have yet to fully recover from a sharp slowdown late last year. "With global growth set to remain weak in the coming quarters, a strong rebound in exports looks unlikely," he said. Adding to the worries, China's imports fell more than expected, suggesting...