diff --git a/EGkCurveComposite.h b/EGkCurveComposite.h
index 11144d7..48b90ec 100644
--- a/EGkCurveComposite.h
+++ b/EGkCurveComposite.h
@@ -94,7 +94,19 @@ inline ICurveComposite* ConvertCurveToComposite( IGeoObj* pGObj)
                     delete pGObj ;
                     return nullptr ;
                  }
-                 pCrvCo->AddCurve( static_cast<ICurve*>( pGObj)) ;
+                 ICurve* pCrv = static_cast<ICurve*>( pGObj) ;
+                 Vector3d vtExtr ;
+                 if ( pCrv->GetExtrusion( vtExtr)  &&  ! vtExtr.IsSmall())
+                    pCrvCo->SetExtrusion( vtExtr) ;
+                 double dThick ;
+                 if ( pCrv->GetThickness( dThick)  &&  abs( dThick) > EPS_SMALL)
+                    pCrvCo->SetThickness( dThick) ;
+                 for ( int i = 0 ; i < 2 ; ++ i) {
+                    int nProp = pCrv->GetTempProp( i) ;
+                    if ( nProp != 0)
+                       pCrvCo->SetTempProp( nProp, i) ;
+                 }
+                 pCrvCo->AddCurve( pCrv) ;
                  return pCrvCo ;
                }