if ( NeedFix ( myFixAddCurve3dMode ) ) {
    for ( i=1; i <= nb; i++ ) {
      myFixEdge->FixAddCurve3d ( sbwd->Edge(i) );
      if ( myFixEdge->Status ( ShapeExtend_DONE ) ) 
    myStatusEdgeCurves |= ShapeExtend::EncodeStatus ( ShapeExtend_DONE5 );
      if ( myFixEdge->Status ( ShapeExtend_FAIL ) ) {
        //:abv 29.08.01: Spatial_firex_lofting.sat: if 3d curve cannot
        // be built because edge has no pcurves either, remove that edge
        Handle(Geom2d_Curve) C;
        Handle(Geom_Surface) S;
        TopLoc_Location L;
        Standard_Real first = 0., last = 0.;
        BRep_Tool::CurveOnSurface ( sbwd->Edge(i), C, S, L, first, last );
        if ( C.IsNull() || Abs (last - first) < Precision::PConfusion())
        {
          SendWarning ( sbwd->Edge ( i ), Message_Msg ( "FixWire.FixCurve3d.Removed" ) );// Incomplete edge (with no pcurves or 3d curve) removed
          sbwd->Remove ( i-- );
          nb--;
          myStatusEdgeCurves |= ShapeExtend::EncodeStatus ( ShapeExtend_DONE5 );
          FixConnected (i + 1, Precision());
        }
    myStatusEdgeCurves |= ShapeExtend::EncodeStatus ( ShapeExtend_FAIL5 );
      }
    }
  }