The July vaida extended losses while the December vaida retained week-end level on the forward cottonseeds oilcake market on Monday in process of trading, dealers said. The July vaida ended at Rs 998.50, they said. The next day, the business commenced with a loss of 30 paisa at Rs 998.50 in the beginning hours, dealers said. The December contract closed at Rs 949.50 and it commenced with no change in the early session, they added.