diff --git a/implementation/eAccess/model2owl-config/config-parameters.xsl b/implementation/eAccess/model2owl-config/config-parameters.xsl
index 27566e65..4499c3df 100644
--- a/implementation/eAccess/model2owl-config/config-parameters.xsl
+++ b/implementation/eAccess/model2owl-config/config-parameters.xsl
@@ -77,7 +77,7 @@
     <xsl:variable name="allowedStrings" select="'^[\w\d-_:]+$'"/>
 
     <!--    Generate reused classes, attributes and connectors-->
-    <xsl:variable name="generateReusedConcepts" select="fn:false()"/>
+    <xsl:variable name="generateReusedConcepts" select="fn:true()"/>
 
 
     <xsl:variable name="reference-to-external-classes-in-glossary" select="fn:true()"/>
diff --git a/implementation/eCatalogue/model2owl-config/config-parameters.xsl b/implementation/eCatalogue/model2owl-config/config-parameters.xsl
index 38a68725..cc59b780 100644
--- a/implementation/eCatalogue/model2owl-config/config-parameters.xsl
+++ b/implementation/eCatalogue/model2owl-config/config-parameters.xsl
@@ -77,7 +77,7 @@
     <xsl:variable name="allowedStrings" select="'^[\w\d-_:]+$'"/>
 
     <!--    Generate reused classes, attributes and connectors-->
-    <xsl:variable name="generateReusedConcepts" select="fn:false()"/>
+    <xsl:variable name="generateReusedConcepts" select="fn:true()"/>
 
 
     <xsl:variable name="reference-to-external-classes-in-glossary" select="fn:true()"/>
diff --git a/implementation/eContract/model2owl-config/config-parameters.xsl b/implementation/eContract/model2owl-config/config-parameters.xsl
index 8e841bad..27465f34 100644
--- a/implementation/eContract/model2owl-config/config-parameters.xsl
+++ b/implementation/eContract/model2owl-config/config-parameters.xsl
@@ -77,7 +77,7 @@
     <xsl:variable name="allowedStrings" select="'^[\w\d-_:]+$'"/>
 
     <!--    Generate reused classes, attributes and connectors-->
-    <xsl:variable name="generateReusedConcepts" select="fn:false()"/>
+    <xsl:variable name="generateReusedConcepts" select="fn:true()"/>
 
 
     <xsl:variable name="reference-to-external-classes-in-glossary" select="fn:true()"/>
diff --git a/implementation/eFulfilment/model2owl-config/config-parameters.xsl b/implementation/eFulfilment/model2owl-config/config-parameters.xsl
index ff73f2a1..af7f9a37 100644
--- a/implementation/eFulfilment/model2owl-config/config-parameters.xsl
+++ b/implementation/eFulfilment/model2owl-config/config-parameters.xsl
@@ -77,7 +77,7 @@
     <xsl:variable name="allowedStrings" select="'^[\w\d-_:]+$'"/>
 
     <!--    Generate reused classes, attributes and connectors-->
-    <xsl:variable name="generateReusedConcepts" select="fn:false()"/>
+    <xsl:variable name="generateReusedConcepts" select="fn:true()"/>
 
 
     <xsl:variable name="reference-to-external-classes-in-glossary" select="fn:true()"/>
diff --git a/implementation/eNotice/model2owl-config/config-parameters.xsl b/implementation/eNotice/model2owl-config/config-parameters.xsl
index 68dfa148..e4b20098 100644
--- a/implementation/eNotice/model2owl-config/config-parameters.xsl
+++ b/implementation/eNotice/model2owl-config/config-parameters.xsl
@@ -77,7 +77,7 @@
     <xsl:variable name="allowedStrings" select="'^[\w\d-_:]+$'"/>
 
     <!--    Generate reused classes, attributes and connectors-->
-    <xsl:variable name="generateReusedConcepts" select="fn:false()"/>
+    <xsl:variable name="generateReusedConcepts" select="fn:true()"/>
 
 
     <xsl:variable name="reference-to-external-classes-in-glossary" select="fn:true()"/>
diff --git a/implementation/eOrdering/model2owl-config/config-parameters.xsl b/implementation/eOrdering/model2owl-config/config-parameters.xsl
index dd241f8a..59f8b307 100644
--- a/implementation/eOrdering/model2owl-config/config-parameters.xsl
+++ b/implementation/eOrdering/model2owl-config/config-parameters.xsl
@@ -77,7 +77,7 @@
     <xsl:variable name="allowedStrings" select="'^[\w\d-_:]+$'"/>
 
     <!--    Generate reused classes, attributes and connectors-->
-    <xsl:variable name="generateReusedConcepts" select="fn:false()"/>
+    <xsl:variable name="generateReusedConcepts" select="fn:true()"/>
 
 
     <xsl:variable name="reference-to-external-classes-in-glossary" select="fn:true()"/>
diff --git a/implementation/ePO_core/model2owl-config/config-parameters.xsl b/implementation/ePO_core/model2owl-config/config-parameters.xsl
index 11f54765..f7357d1a 100644
--- a/implementation/ePO_core/model2owl-config/config-parameters.xsl
+++ b/implementation/ePO_core/model2owl-config/config-parameters.xsl
@@ -77,7 +77,7 @@
     <xsl:variable name="allowedStrings" select="'^[\w\d-_:]+$'"/>
 
     <!--    Generate reused classes, attributes and connectors-->
-    <xsl:variable name="generateReusedConcepts" select="fn:false()"/>
+    <xsl:variable name="generateReusedConcepts" select="fn:true()"/>
 
 
     <xsl:variable name="reference-to-external-classes-in-glossary" select="fn:false()"/>
diff --git a/implementation/ePO_core/xmi_conceptual_model/ePO_core.xml b/implementation/ePO_core/xmi_conceptual_model/ePO_core.xml
index e994ec99..40b3c5bc 100644
--- a/implementation/ePO_core/xmi_conceptual_model/ePO_core.xml
+++ b/implementation/ePO_core/xmi_conceptual_model/ePO_core.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="windows-1252"?>
 <xmi:XMI xmlns:uml="http://www.omg.org/spec/UML/20131001" xmlns:xmi="http://www.omg.org/spec/XMI/20131001" xmlns:umldi="http://www.omg.org/spec/UML/20131001/UMLDI" xmlns:dc="http://www.omg.org/spec/UML/20131001/UMLDC" xmlns:thecustomprofile="http://www.sparxsystems.com/profiles/thecustomprofile/1.0">
-	<xmi:Documentation exporter="Enterprise  Architect" exporterVersion="6.5" exporterID="1559"/>
+	<xmi:Documentation exporter="Enterprise Architect" exporterVersion="6.5" exporterID="1559"/>
 	<uml:Model xmi:type="uml:Model" name="EA_Model">
 		<packagedElement xmi:type="uml:Package" xmi:id="EAPK_DB0C4677_88DC_4767_8DE5_76387A40E5AE" name="ePO">
 			<packagedElement xmi:type="uml:Package" xmi:id="EAPK_6B65084A_798D_4f35_BA8F_EF75ACEBC684" name="eProcurementOntology">