Thank you a lot for your concern.
means suppose I book a break journey ticket from Bhadrakh (BHC) to Bangalore (SBC) with BHC to Chennai (MAS) by Coromandel Exp and then from MAS to SBC by Bangalore Mail. Now I want to change the boarding point from BHC to Bhubaneswar (BBS) in the same Coromandel Exp (the route for Coromandel is BHC->BBS->MAS). Is it possible?