Torsion on a RC Beam

Dear Sir,

I am doing a RC structural design. In my design, I don't want the beam to take any torsion moment, so I release the Mx for all the beam. My question are:

1. Is it the correct way to release moment Mx if I do not want to design the beam to take torsion?  

2. Will the release of Mx cause the moment to be transfer to the support?

Because when I check back the Reaction Summary, the value of Fy for same node increase, the shear force (Fx, Fz) and moment (My, Mz) value for the beam force detail also change.

Your response will be highly appreciated.

Thank You.