increase of pressure in restart file

dear all
i have problem with restart file . in the simulation the pressure is properly set. but in restart file that I generated it with this simulation and read it in next simulation , pressure increase widely. can anyone help me.
thanks in advance

this is all too vague and unspecific to give any advice. chances are that either you are not doing the restart correctly or you are misinterpreting the data and misunderstanding what are acceptable pressure fluctuations for a given system of a given size, density and temperature.