To ur Surprise, Raipur's WDG-4's are running to n fro in that route. :) N few are spotted in VSKP's mini car shed i.e trip shed now a days. ECOR's pilots are undergoing training coz as per sources n few lp's, 12839/12840 will get a WAP-7 end to end from next year mostly followed by BBS Rajdhani n other few important ones.
N in the case of R - VZM section, partial of its doubled n OHE's are raising there too. but it might take more 2-3years to see ELCOS running. Perhaps, ECOR pilots should learn the lessons in a fast pace to handle them.