as per latest Dainik Bhaskar Ranchi news
20839/40 will keep on running via GMO-Gaya; 12453/54 may get new no. 20853/54 will be made to run permanently via LAD-Tori; 12877/78 will keep on running via DOS-BRKA. 12453/54 may get handed over to SER with rake standardization.