diff --git a/_test_simple.ifc b/_test_simple.ifc
index 4fc0cc9..5f67e48 100644
--- a/_test_simple.ifc
+++ b/_test_simple.ifc
@@ -4138,7 +4138,7 @@ DATA;
 #5022=IFCWALL('1_$aWwKov0Sf7It_vDy_tx',$,'porch south wall',$,$,#5033,#5028,$,$);
 #5023=IFCMATERIALLAYERSETUSAGE(#142,.AXIS2.,.POSITIVE.,0.,$);
 #5024=IFCRELASSOCIATESMATERIAL('2pXAM9FwrFY9lC4Sz49sXz',$,$,$,(#5022),#5023);
-#5028=IFCPRODUCTDEFINITIONSHAPE($,$,(#8615,#8612));
+#5028=IFCPRODUCTDEFINITIONSHAPE($,$,(#8615,#8719));
 #5029=IFCCARTESIANPOINT((2.25000023841858,-1.15582501888275,0.));
 #5030=IFCDIRECTION((0.,0.,1.));
 #5031=IFCDIRECTION((1.,0.,0.));
@@ -4162,7 +4162,7 @@ DATA;
 #5072=IFCWALL('2donwy3Dr5CPaKmOIdQQcb',$,'porch north wall',$,$,#5181,#5078,$,$);
 #5073=IFCMATERIALLAYERSETUSAGE(#142,.AXIS2.,.POSITIVE.,0.,$);
 #5074=IFCRELASSOCIATESMATERIAL('3apSz7di97iBofXEAfmuJI',$,$,$,(#5072),#5073);
-#5078=IFCPRODUCTDEFINITIONSHAPE($,$,(#8628,#8625));
+#5078=IFCPRODUCTDEFINITIONSHAPE($,$,(#8628,#8743));
 #5094=IFCPROPERTYSET('20$m9HA010xfEFnKAwwHBu',$,'EPset_Parametric',$,(#5096));
 #5095=IFCRELDEFINESBYPROPERTIES('1cdFWS8Er9b8kFsrQJ0Aq0',$,$,$,(#5072),#5094);
 #5096=IFCPROPERTYSINGLEVALUE('Engine',$,IFCLABEL('Bonsai.DumbLayer2'),$);
@@ -6000,29 +6000,9 @@ DATA;
 #8600=IFCCARTESIANPOINTLIST2D(((0.,0.),(2.20000004768375,0.)));
 #8601=IFCINDEXEDPOLYCURVE(#8600,$,$);
 #8602=IFCSHAPEREPRESENTATION(#23,'Axis','Curve2D',(#8601));
-#8603=IFCCARTESIANPOINTLIST2D(((0.,0.),(0.,0.33),(1.56999988186316,0.33),(1.89999985694885,0.)));
-#8604=IFCINDEXEDPOLYCURVE(#8603,(IFCLINEINDEX((1,2,3,4,1))),$);
-#8605=IFCARBITRARYCLOSEDPROFILEDEF(.AREA.,$,#8604);
-#8606=IFCCARTESIANPOINT((0.,0.,0.));
-#8607=IFCDIRECTION((0.,0.,1.));
-#8608=IFCDIRECTION((1.,0.,0.));
-#8609=IFCAXIS2PLACEMENT3D(#8606,#8607,#8608);
-#8610=IFCDIRECTION((0.,0.,1.));
-#8611=IFCEXTRUDEDAREASOLID(#8605,#8609,#8610,3.5);
-#8612=IFCSHAPEREPRESENTATION(#11,'Body','SweptSolid',(#8611));
 #8613=IFCCARTESIANPOINTLIST2D(((0.,0.),(1.89999985694885,0.)));
 #8614=IFCINDEXEDPOLYCURVE(#8613,$,$);
 #8615=IFCSHAPEREPRESENTATION(#23,'Axis','Curve2D',(#8614));
-#8616=IFCCARTESIANPOINTLIST2D(((0.,0.),(0.330000074742931,0.33),(1.90000026397249,0.33),(1.90000026397249,0.)));
-#8617=IFCINDEXEDPOLYCURVE(#8616,(IFCLINEINDEX((1,2,3,4,1))),$);
-#8618=IFCARBITRARYCLOSEDPROFILEDEF(.AREA.,$,#8617);
-#8619=IFCCARTESIANPOINT((0.,0.,0.));
-#8620=IFCDIRECTION((0.,0.,1.));
-#8621=IFCDIRECTION((1.,0.,0.));
-#8622=IFCAXIS2PLACEMENT3D(#8619,#8620,#8621);
-#8623=IFCDIRECTION((0.,0.,1.));
-#8624=IFCEXTRUDEDAREASOLID(#8618,#8622,#8623,3.5);
-#8625=IFCSHAPEREPRESENTATION(#11,'Body','SweptSolid',(#8624));
 #8626=IFCCARTESIANPOINTLIST2D(((0.,0.),(1.90000026397249,0.)));
 #8627=IFCINDEXEDPOLYCURVE(#8626,$,$);
 #8628=IFCSHAPEREPRESENTATION(#23,'Axis','Curve2D',(#8627));
@@ -6082,5 +6062,53 @@ DATA;
 #8693=IFCCARTESIANPOINTLIST2D(((0.,0.),(4.139,0.)));
 #8694=IFCINDEXEDPOLYCURVE(#8693,$,$);
 #8695=IFCSHAPEREPRESENTATION(#23,'Axis','Curve2D',(#8694));
+#8696=IFCCARTESIANPOINTLIST2D(((0.,0.),(0.,0.33),(1.9,0.33),(1.9,0.),(0.,0.)));
+#8697=IFCINDEXEDPOLYCURVE(#8696,$,.F.);
+#8698=IFCDIRECTION((0.,0.,1.));
+#8699=IFCARBITRARYCLOSEDPROFILEDEF(.AREA.,$,#8697);
+#8700=IFCCARTESIANPOINT((0.,0.,0.));
+#8701=IFCDIRECTION((0.,0.,1.));
+#8702=IFCDIRECTION((1.,0.,0.));
+#8703=IFCAXIS2PLACEMENT3D(#8700,#8701,#8702);
+#8704=IFCEXTRUDEDAREASOLID(#8699,#8703,#8698,3.5);
+#8705=IFCCARTESIANPOINT((1.9,0.,0.));
+#8706=IFCDIRECTION((-0.707,-0.707,0.));
+#8707=IFCDIRECTION((-0.707106781186548,0.707106781186548,0.));
+#8708=IFCAXIS2PLACEMENT3D(#8705,#8706,#8707);
+#8709=IFCPLANE(#8708);
+#8710=IFCHALFSPACESOLID(#8709,.F.);
+#8711=IFCBOOLEANCLIPPINGRESULT(.DIFFERENCE.,#8704,#8710);
+#8712=IFCCARTESIANPOINT((0.,0.,3.26));
+#8713=IFCDIRECTION((-0.419,0.,-0.908));
+#8714=IFCDIRECTION((0.,1.,-0.));
+#8715=IFCAXIS2PLACEMENT3D(#8712,#8713,#8714);
+#8716=IFCPLANE(#8715);
+#8717=IFCHALFSPACESOLID(#8716,.F.);
+#8718=IFCBOOLEANCLIPPINGRESULT(.DIFFERENCE.,#8711,#8717);
+#8719=IFCSHAPEREPRESENTATION(#11,'Body','Clipping',(#8718));
+#8720=IFCCARTESIANPOINTLIST2D(((0.,0.),(0.,0.33),(1.9,0.33),(1.9,0.),(0.,0.)));
+#8721=IFCINDEXEDPOLYCURVE(#8720,$,.F.);
+#8722=IFCDIRECTION((0.,0.,1.));
+#8723=IFCARBITRARYCLOSEDPROFILEDEF(.AREA.,$,#8721);
+#8724=IFCCARTESIANPOINT((0.,0.,0.));
+#8725=IFCDIRECTION((0.,0.,1.));
+#8726=IFCDIRECTION((1.,0.,0.));
+#8727=IFCAXIS2PLACEMENT3D(#8724,#8725,#8726);
+#8728=IFCEXTRUDEDAREASOLID(#8723,#8727,#8722,3.5);
+#8729=IFCCARTESIANPOINT((0.,0.,0.));
+#8730=IFCDIRECTION((0.707,-0.707,0.));
+#8731=IFCDIRECTION((-0.707106781186548,-0.707106781186548,0.));
+#8732=IFCAXIS2PLACEMENT3D(#8729,#8730,#8731);
+#8733=IFCPLANE(#8732);
+#8734=IFCHALFSPACESOLID(#8733,.F.);
+#8735=IFCBOOLEANCLIPPINGRESULT(.DIFFERENCE.,#8728,#8734);
+#8736=IFCCARTESIANPOINT((0.,0.,2.384));
+#8737=IFCDIRECTION((0.419,0.,-0.908));
+#8738=IFCDIRECTION((0.,-1.,0.));
+#8739=IFCAXIS2PLACEMENT3D(#8736,#8737,#8738);
+#8740=IFCPLANE(#8739);
+#8741=IFCHALFSPACESOLID(#8740,.F.);
+#8742=IFCBOOLEANCLIPPINGRESULT(.DIFFERENCE.,#8735,#8741);
+#8743=IFCSHAPEREPRESENTATION(#11,'Body','Clipping',(#8742));
 ENDSEC;
 END-ISO-10303-21;