diff --git a/datamodels/2.x/itop-incident-mgmt-itil/datamodel.itop-incident-mgmt-itil.xml b/datamodels/2.x/itop-incident-mgmt-itil/datamodel.itop-incident-mgmt-itil.xml
index ba79b8392..364089f0d 100755
--- a/datamodels/2.x/itop-incident-mgmt-itil/datamodel.itop-incident-mgmt-itil.xml
+++ b/datamodels/2.x/itop-incident-mgmt-itil/datamodel.itop-incident-mgmt-itil.xml
@@ -311,14 +311,14 @@
         <field id="related_request_list" xsi:type="AttributeLinkedSet">
           <linked_class>UserRequest</linked_class>
           <ext_key_to_me>parent_incident_id</ext_key_to_me>
-          <edit_mode>none</edit_mode>
+          <edit_mode>add_remove</edit_mode>
           <count_min>0</count_min>
           <count_max>0</count_max>
         </field>
         <field id="child_incidents_list" xsi:type="AttributeLinkedSet">
           <linked_class>Incident</linked_class>
           <ext_key_to_me>parent_incident_id</ext_key_to_me>
-          <edit_mode>none</edit_mode>
+          <edit_mode>add_remove</edit_mode>
           <count_min>0</count_min>
           <count_max>0</count_max>
         </field>
diff --git a/datamodels/2.x/itop-problem-mgmt/datamodel.itop-problem-mgmt.xml b/datamodels/2.x/itop-problem-mgmt/datamodel.itop-problem-mgmt.xml
index 7f4fc98f0..4495e4cf8 100755
--- a/datamodels/2.x/itop-problem-mgmt/datamodel.itop-problem-mgmt.xml
+++ b/datamodels/2.x/itop-problem-mgmt/datamodel.itop-problem-mgmt.xml
@@ -149,7 +149,7 @@
         <field id="related_request_list" xsi:type="AttributeLinkedSet">
           <linked_class>UserRequest</linked_class>
           <ext_key_to_me>parent_problem_id</ext_key_to_me>
-          <edit_mode>none</edit_mode>
+          <edit_mode>add_remove</edit_mode>
           <count_min>0</count_min>
           <count_max>0</count_max>
         </field>
diff --git a/datamodels/2.x/itop-request-mgmt-itil/datamodel.itop-request-mgmt-itil.xml b/datamodels/2.x/itop-request-mgmt-itil/datamodel.itop-request-mgmt-itil.xml
index ce85542bb..dd577e7a6 100755
--- a/datamodels/2.x/itop-request-mgmt-itil/datamodel.itop-request-mgmt-itil.xml
+++ b/datamodels/2.x/itop-request-mgmt-itil/datamodel.itop-request-mgmt-itil.xml
@@ -375,7 +375,7 @@
         <field id="related_request_list" xsi:type="AttributeLinkedSet">
           <linked_class>UserRequest</linked_class>
           <ext_key_to_me>parent_request_id</ext_key_to_me>
-          <edit_mode>none</edit_mode>
+          <edit_mode>add_remove</edit_mode>
           <count_min>0</count_min>
           <count_max>0</count_max>
         </field>
diff --git a/datamodels/2.x/itop-request-mgmt/datamodel.itop-request-mgmt.xml b/datamodels/2.x/itop-request-mgmt/datamodel.itop-request-mgmt.xml
index 0655e327e..f8cbb6c6a 100755
--- a/datamodels/2.x/itop-request-mgmt/datamodel.itop-request-mgmt.xml
+++ b/datamodels/2.x/itop-request-mgmt/datamodel.itop-request-mgmt.xml
@@ -369,7 +369,7 @@
         <field id="related_request_list" xsi:type="AttributeLinkedSet">
           <linked_class>UserRequest</linked_class>
           <ext_key_to_me>parent_request_id</ext_key_to_me>
-          <edit_mode>none</edit_mode>
+          <edit_mode>add_remove</edit_mode>
           <count_min>0</count_min>
           <count_max>0</count_max>
         </field>