diff --git a/datamodels/2.x/itop-bridge-endusers-devices-services/datamodel.itop-bridge-endusers-devices-services.xml b/datamodels/2.x/itop-bridge-endusers-devices-services/datamodel.itop-bridge-endusers-devices-services.xml
index c0ccc9768..c76069509 100644
--- a/datamodels/2.x/itop-bridge-endusers-devices-services/datamodel.itop-bridge-endusers-devices-services.xml
+++ b/datamodels/2.x/itop-bridge-endusers-devices-services/datamodel.itop-bridge-endusers-devices-services.xml
@@ -6,10 +6,10 @@
       <presentation>
         <details>
           <items>
-            <item id="providercontracts_list" _delta="define">
+            <item id="providercontracts_list" _delta="define_if_not_exists">
               <rank>180</rank>
             </item>
-            <item id="services_list" _delta="define">
+            <item id="services_list" _delta="define_if_not_exists">
               <rank>190</rank>
             </item>
           </items>
@@ -20,10 +20,10 @@
       <presentation>
         <details>
           <items>
-            <item id="providercontracts_list" _delta="define">
+            <item id="providercontracts_list" _delta="define_if_not_exists">
               <rank>200</rank>
             </item>
-            <item id="services_list" _delta="define">
+            <item id="services_list" _delta="define_if_not_exists">
               <rank>210</rank>
             </item>
           </items>
@@ -34,10 +34,10 @@
       <presentation>
         <details>
           <items>
-            <item id="providercontracts_list" _delta="define">
+            <item id="providercontracts_list" _delta="define_if_not_exists">
               <rank>170</rank>
             </item>
-            <item id="services_list" _delta="define">
+            <item id="services_list" _delta="define_if_not_exists">
               <rank>180</rank>
             </item>
           </items>
@@ -48,10 +48,10 @@
       <presentation>
         <details>
           <items>
-            <item id="providercontracts_list" _delta="define">
+            <item id="providercontracts_list" _delta="define_if_not_exists">
               <rank>170</rank>
             </item>
-            <item id="services_list" _delta="define">
+            <item id="services_list" _delta="define_if_not_exists">
               <rank>180</rank>
             </item>
           </items>
@@ -62,10 +62,10 @@
       <presentation>
         <details>
           <items>
-            <item id="providercontracts_list" _delta="define">
+            <item id="providercontracts_list" _delta="define_if_not_exists">
               <rank>60</rank>
             </item>
-            <item id="services_list" _delta="define">
+            <item id="services_list" _delta="define_if_not_exists">
               <rank>70</rank>
             </item>
           </items>
@@ -76,10 +76,10 @@
       <presentation>
         <details>
           <items>
-            <item id="providercontracts_list" _delta="define">
+            <item id="providercontracts_list" _delta="define_if_not_exists">
               <rank>170</rank>
             </item>
-            <item id="services_list" _delta="define">
+            <item id="services_list" _delta="define_if_not_exists">
               <rank>180</rank>
             </item>
           </items>
diff --git a/datamodels/2.x/itop-bridge-virtualization-mgmt-services/datamodel.itop-bridge-virtualization-mgmt-services.xml b/datamodels/2.x/itop-bridge-virtualization-mgmt-services/datamodel.itop-bridge-virtualization-mgmt-services.xml
index dd4eb27ab..65d71834d 100644
--- a/datamodels/2.x/itop-bridge-virtualization-mgmt-services/datamodel.itop-bridge-virtualization-mgmt-services.xml
+++ b/datamodels/2.x/itop-bridge-virtualization-mgmt-services/datamodel.itop-bridge-virtualization-mgmt-services.xml
@@ -6,10 +6,10 @@
       <presentation>
         <details>
           <items>
-            <item id="providercontracts_list" _delta="define">
+            <item id="providercontracts_list" _delta="define_if_not_exists">
               <rank>130</rank>
             </item>
-            <item id="services_list" _delta="define">
+            <item id="services_list" _delta="define_if_not_exists">
               <rank>140</rank>
             </item>
           </items>
@@ -20,10 +20,10 @@
       <presentation>
         <details>
           <items>
-            <item id="providercontracts_list" _delta="define">
+            <item id="providercontracts_list" _delta="define_if_not_exists">
               <rank>120</rank>
             </item>
-            <item id="services_list" _delta="define">
+            <item id="services_list" _delta="define_if_not_exists">
               <rank>130</rank>
             </item>
           </items>
@@ -34,10 +34,10 @@
       <presentation>
         <details>
           <items>
-            <item id="providercontracts_list" _delta="define">
+            <item id="providercontracts_list" _delta="define_if_not_exists">
               <rank>70</rank>
             </item>
-            <item id="services_list" _delta="define">
+            <item id="services_list" _delta="define_if_not_exists">
               <rank>80</rank>
             </item>
           </items>