Due to RSA many trains are mentoned like that only
earlier it is BZA GDR pass(when it has ICF coaches) after replacing with MEMU they made it as BZA OGL Memu and Ogl GDR Memu
even same wth Ogl Gnt Memu, it is called as OGL TEL Memu and TEL GNT Memu
and prev there used to be Ogl RJY Memu not they changed...
more... RSA and is now running as Ogl BZa and Ogl BZa and BZa Dornakal
such is bcz of distance restrections for MEMU and DEMU rakes