You are correct- IR(Read politicians) are trying to dilute & ultimately sabotage the Duronto concept. I agree that loss making or low patronage Durontos should be immediately converted or withdrawn, but the highly successful one's should be retained as it is- 12259/12260, 12221/12222, 12261/12262, 12245/12246, 12263/12264, 12265/12266, 12267/12268, 12273/12274, 12289/12290, 12297/12298, 22201/22202 & 22209/22210 are some of the most successful trains.