Mutual transfer betwwen Direct SSE and promotee SSE

Sir,
I am a direct SSE of carriage workshop in kahragpur, South Eastern Railway, In the month of FEb 2014, I have applied for mutual transfer with a promotee SSE of New Bongaidaon workshop of NFR. Recently my transfer has been regretted in the ground that I am a direct cadre and he is a promotee cadre. Both of our categories are same,

Sir, what i wanna know is
Is it possible for mutual transfer between a direct SSE and a promotee SSE,
If so, please provide me the specific rules.

Thank you Sir

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