SWR's 16525/26 shares its rake with 12633/12634, which is running inside SR. It was told that, when this RSA came into force, it helped SWR save a complete rake, but at the cost of SWR being responsible for primary maintenance. Passengers too got benefitted, as due to this RSA, they got 1 2A-cum H1 and one additional sleeper too. So everybody wins here