Also the only reliable train on Sundays from BGM, UBL to SBC is RC, KSK sometimes gets delayed. & Fridays from SBC to UBL/BGM the only train present is RC in the night, getting ticket in Vasco exp is too difficult and it doesn't go till BGM.
SWR has to run a daily SF with timings similar to:
YPR-21:00
UBL-5:00
BGM-...
more... 7:30
Return: BGM- 19:00
UBL-21:30
YPR/SBC-5:30
But return will clash its timings with KSK, RC.