Exactly said sir...
CSTM-SC Minar Express (not sure on number part) and SC-BBS Konark Express with train number 19/20 were two different trains with RSA. They were clubbed and made run as Konark Express between CSTM and BBS. First it was super-fast with train number 2119/2120. Later in 1992 Supreme Court gave few instructions to the Railway Board on SF status, where it clearly started average should be minimum of 55kmph end to end. Then Konark lost SF status and renumbered as 1019/1020.