I know you want to tell us something interesting. As Per my knowledge is concerned, there is not much difference between these two. The only different, I think, adding pro to sashan adds the Government to come into force.
Dear som,
Ooops! No, no, I am unable to tell something special in this matter. Some members are now probably out of station due to Puja festival and, not in touch with the forum. That’s why this post has remained unattended. Let them come back to forum and enlighten us!