COM moves after restarting calculation

[LS]

Hi,

I am performing a BOMD on an isolated system in a box with Wavelet Poisson 
solver. I center the coordinates within the cell as required by the Poisson 
solver. I find that when I restart the BOMD calculation (to do more time 
steps), right at the beginning, there is a movement of the center of mass of 
the entire system. Although, this is not going to affect the physics, it is 
a distracting feature when viewing the final trajectory (for all the time 
steps before and after the restart). Is there some way this can be avoided?

Thanks
Lakshmi
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