The January vaida was down and March contract was unchanged on the forward cottonseed oilcake market on Monday in the process of trading, dealers said. The January contract closed at Rs 1568.50 on Saturday and it opened with a decline of 20 paisa at Rs 1568.30 in the morning session, they said. The March vaida ended at Rs 1429.30, while, it commenced with no change in the wee hours, they said.