Because kjm alcos cannot be mainlink to any train anymore and all trains including kcg exp which used to run with twins started to get GY EMD instead of KJM and maximum kjm emd can be the link but ubl emd will also be regular. Kjm alcos can never be the mainlink.
Kjm is not sending their alcos for mainline services mostly it will be spotted at Sbc/ypr for shunting purposes ofcourse still they are not completely condemned
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