Pl understand the situation. There is a move to divert both Kamban and Mannai Expresses via Peralam-tiruvarur route. If it is done, then Kumbakonan and thanjavur will not have a train through Mayiladuthurai route to Chennai. Rockfort is there but it is a different matter. Then Kumbakonam and thanjavur have to be provided with a train. Thanjavur and Kumbakonam have a big crowd. It cannot be simply neglected. Now, they may divert Kamban through Peralam but keep Mannai in the original route. The best solution will be divert Mannai through Peralam with some coaches to Karaikal and some to Mannargudi with attachment/detachment at Tiruvarur. And the present Kamban should be terminated at Thanjavur. But, political pressure is big and thinking differently.