Information from the pics related to NLR & OGL districts:
1. 17237/28 MAS - NLR extended to BTTR.
2. 67205 BZA - BTTR extended to GDR
3. 67207/08 partially cancelled between Gummidipundi and MGRChennai
4....
more... Change of terminal for 12759/60 Charminar express to TBM