Ftm.gh

Hi guys, I export from etabs 16 to safe 12 and when I convert linear combinations to nonlinear combination, the time of analysis takes too long. So I have to cancel it and delete nonlinear combinations. Therefore the problem of analysis time is solved but I can not make nonlinear combinations again. Who knows? and could anybody help me? Thank sincerely 90.05.16_Safe.FDB 90.05.16_Safe.$sf