12315/16 ka extension justified hain. WR lost 19413/14 which underwent route change. Old route was ADI to RTM via ABR-AII-COR. But new route is ADI-ANND-CYI-GDA-RTM. So connection of ADI with AII & COR was lost. Hence 12315/16 extension to ADI will connect AII & CNA(COR) via UDZ-HMT