diff --git a/test/regression/golden/2layer.dae b/test/regression/golden/2layer.dae
index a83aa6b..6ee0aab 100644
--- a/test/regression/golden/2layer.dae
+++ b/test/regression/golden/2layer.dae
@@ -268,37 +268,43 @@
       <node id="line-2LAYER-TEST_LINE3-0000000001" name="line-2LAYER-TEST_LINE3-0000000001">
         <instance_geometry url="#geometry0000000000-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000000-00000" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000001-00000">
           <bind_material>
             <technique_common>
-              <instance_material symbol="materialref-00000" target="#material-00000"/>
+              <instance_material symbol="materialref-0000000001-00001" target="#material-00000"/>
             </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000000-00001">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000000-00000" target="#material-00001"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000001-00001">
           <bind_material>
             <technique_common>
-              <instance_material symbol="materialref-00001" target="#material-00001"/>
+              <instance_material symbol="materialref-0000000001-00001" target="#material-00001"/>
             </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000000-00002">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000000-00000" target="#material-00002"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000001-00002">
           <bind_material>
             <technique_common>
-              <instance_material symbol="materialref-00002" target="#material-00002"/>
+              <instance_material symbol="materialref-0000000001-00001" target="#material-00002"/>
             </technique_common>
           </bind_material>
         </instance_geometry>
diff --git a/test/regression/golden/plTest.dae b/test/regression/golden/plTest.dae
index b5a38d6..aed79d8 100644
--- a/test/regression/golden/plTest.dae
+++ b/test/regression/golden/plTest.dae
@@ -308,63 +308,85 @@
       <node id="line-RECTANGLE-0000000011" name="line-RECTANGLE-0000000011">
         <instance_geometry url="#geometry0000000000-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000000-00000" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000001-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000001-00001" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000002-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000002-00002" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000003-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000003-00003" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000004-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000004-00004" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000005-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000005-00005" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000006-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000006-00006" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000007-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000007-00007" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000008-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000008-00008" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000009-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000009-00009" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000010-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000010-00010" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000011-00000">
           <bind_material>
             <technique_common>
-              <instance_material symbol="materialref-00000" target="#material-00000"/>
+              <instance_material symbol="materialref-0000000011-00011" target="#material-00000"/>
             </technique_common>
           </bind_material>
         </instance_geometry>
diff --git a/test/regression/golden/wl2Test.dae b/test/regression/golden/wl2Test.dae
index 246b3a0..d100e6b 100644
--- a/test/regression/golden/wl2Test.dae
+++ b/test/regression/golden/wl2Test.dae
@@ -78,7 +78,7 @@
         <instance_geometry url="#geometry0000000000-00000">
           <bind_material>
             <technique_common>
-              <instance_material symbol="materialref-00000" target="#material-00000"/>
+              <instance_material symbol="materialref-0000000000-00000" target="#material-00000"/>
             </technique_common>
           </bind_material>
         </instance_geometry>
diff --git a/test/regression/golden/wlTest.dae b/test/regression/golden/wlTest.dae
index 0149184..11f6a6f 100644
--- a/test/regression/golden/wlTest.dae
+++ b/test/regression/golden/wlTest.dae
@@ -518,113 +518,155 @@
       <node id="line-WLTEST-0000000021" name="line-WLTEST-0000000021">
         <instance_geometry url="#geometry0000000000-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000000-00000" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000001-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000001-00001" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000002-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000002-00002" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000003-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000003-00003" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000004-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000004-00004" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000005-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000005-00005" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000006-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000006-00006" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000007-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000007-00007" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000008-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000008-00008" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000009-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000009-00009" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000010-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000010-00010" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000011-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000011-00011" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000012-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000012-00012" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000013-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000013-00013" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000014-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000014-00014" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000015-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000015-00015" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000016-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000016-00016" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000017-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000017-00017" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000018-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000018-00018" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000019-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000019-00019" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000020-00000">
           <bind_material>
-            <technique_common/>
+            <technique_common>
+              <instance_material symbol="materialref-0000000020-00020" target="#material-00000"/>
+            </technique_common>
           </bind_material>
         </instance_geometry>
         <instance_geometry url="#geometry0000000021-00000">
           <bind_material>
             <technique_common>
-              <instance_material symbol="materialref-00000" target="#material-00000"/>
+              <instance_material symbol="materialref-0000000021-00021" target="#material-00000"/>
             </technique_common>
           </bind_material>
         </instance_geometry>