I am trying to download the historical data of the Dow Jones futures on CBOT. The RIC is 1YM. However the root ric changed in the past and it was YM (without the '1') before JUN 2014. How can I find this old root RIC by using the Datascope server and the Instruments List menu ? For the example of 1YM, I knew the answer but I am unable to find the RIC of - the Future Nikkei on CME in $ before 2015 - the VIX on CBOE before 2012 I would appreciate not using the API (something I do for retrieving data) just for finding a chain of RIC. May I have some help please ?