After the transfer of WCAM2 to KYN shed, BSL is now the place for loco change for few trains including CSTM-NGP-HWH MAIL, Punjab Mail etc.
BSL is better place (than Manmad) for electric locomotives as there is a shed itself out there.
Also, The Manmad stoppage is reduced by 10 mins and there equal increase of 10 mins in BSL stoppage.
Second...
more... reason is also that, BSL is important intermediate junction halt in Maharashtra just like Nagpur n like Vadodara(Mumbai-Delhi), Mughalsarai(Delhi-Howrah), are in thier respective states. Still, few trains are there, that skip BSL.