Previously it used to run from Karwar to Vasco as passenger train. Residents of Vasco demanded to SWR few months ago to again start the passenger service. Would be highly beneficial if extended to VSG as there is long pending demand to connect VSG with coastal Kranataka. But issues between KR and SWR always come in between to start such service.
Don't know why SWR simply extends it to VSG by adding some more coaches.
The rake is brought to MAO for stabling purposes as Karwar doesn't have that space.