Trimmed hydrostatic

I tried importing an iges model exported from Napa into Maxsurf. When I tried to extract the hydrostatics of the vessel at different trims, it is not working. Even if I change the trim of the vessel using the option Analysis>Trim, it only shows hydrostatics at trim=0m only. Can someone help me out with this? I tried exporting the model as iges from maxsurf and importing into a new file, but is still didn't help.