Most probably done as Indiacast/Viacom18 has renewed agreement with them for placement of Sports18 Khel on "their platform".
Previously too when certain channels which were available via DD Free Dish on Dish TV Platform and were allotted 4 digit LCN (DD Free Dish LCN Slots), as soon as the concerned broadcaster entered into agreement with Dish TV directly for the said channel then it was shifted to a vacant 3 digit LCN available for the respective genre on the EPG