diff --git a/airtime_mvc/application/models/airtime/map/CcPlayoutHistoryTableMap.php b/airtime_mvc/application/models/airtime/map/CcPlayoutHistoryTableMap.php
index 00e9099a8..6c365d7bb 100644
--- a/airtime_mvc/application/models/airtime/map/CcPlayoutHistoryTableMap.php
+++ b/airtime_mvc/application/models/airtime/map/CcPlayoutHistoryTableMap.php
@@ -52,7 +52,7 @@ class CcPlayoutHistoryTableMap extends TableMap {
 	public function buildRelations()
 	{
     $this->addRelation('CcFiles', 'CcFiles', RelationMap::MANY_TO_ONE, array('file_id' => 'id', ), 'CASCADE', null);
-    $this->addRelation('CcShowInstances', 'CcShowInstances', RelationMap::MANY_TO_ONE, array('instance_id' => 'id', ), 'CASCADE', null);
+    $this->addRelation('CcShowInstances', 'CcShowInstances', RelationMap::MANY_TO_ONE, array('instance_id' => 'id', ), 'SET NULL', null);
     $this->addRelation('CcPlayoutHistoryMetaData', 'CcPlayoutHistoryMetaData', RelationMap::ONE_TO_MANY, array('id' => 'history_id', ), 'CASCADE', null);
 	} // buildRelations()
 
diff --git a/airtime_mvc/application/models/airtime/map/CcShowInstancesTableMap.php b/airtime_mvc/application/models/airtime/map/CcShowInstancesTableMap.php
index 894592f79..c55e86080 100644
--- a/airtime_mvc/application/models/airtime/map/CcShowInstancesTableMap.php
+++ b/airtime_mvc/application/models/airtime/map/CcShowInstancesTableMap.php
@@ -63,7 +63,7 @@ class CcShowInstancesTableMap extends TableMap {
     $this->addRelation('CcFiles', 'CcFiles', RelationMap::MANY_TO_ONE, array('file_id' => 'id', ), 'CASCADE', null);
     $this->addRelation('CcShowInstancesRelatedByDbId', 'CcShowInstances', RelationMap::ONE_TO_MANY, array('id' => 'instance_id', ), 'CASCADE', null);
     $this->addRelation('CcSchedule', 'CcSchedule', RelationMap::ONE_TO_MANY, array('id' => 'instance_id', ), 'CASCADE', null);
-    $this->addRelation('CcPlayoutHistory', 'CcPlayoutHistory', RelationMap::ONE_TO_MANY, array('id' => 'instance_id', ), 'CASCADE', null);
+    $this->addRelation('CcPlayoutHistory', 'CcPlayoutHistory', RelationMap::ONE_TO_MANY, array('id' => 'instance_id', ), 'SET NULL', null);
 	} // buildRelations()
 
 } // CcShowInstancesTableMap
diff --git a/airtime_mvc/build/schema.xml b/airtime_mvc/build/schema.xml
index d6bf6657c..f2a393f1f 100644
--- a/airtime_mvc/build/schema.xml
+++ b/airtime_mvc/build/schema.xml
@@ -488,7 +488,7 @@
     <foreign-key foreignTable="cc_files" name="cc_playout_history_file_tag_fkey" onDelete="CASCADE">
       <reference local="file_id" foreign="id"/>
     </foreign-key>
-    <foreign-key foreignTable="cc_show_instances" name="cc_his_item_inst_fkey" onDelete="CASCADE">
+    <foreign-key foreignTable="cc_show_instances" name="cc_his_item_inst_fkey" onDelete="SETNULL">
       <reference local="instance_id" foreign="id"/>
     </foreign-key>
   </table>
diff --git a/airtime_mvc/build/sql/schema.sql b/airtime_mvc/build/sql/schema.sql
index 1ea9dd4f6..8269fec2a 100644
--- a/airtime_mvc/build/sql/schema.sql
+++ b/airtime_mvc/build/sql/schema.sql
@@ -894,7 +894,7 @@ ALTER TABLE "cc_listener_count" ADD CONSTRAINT "cc_mount_name_inst_fkey" FOREIGN
 
 ALTER TABLE "cc_playout_history" ADD CONSTRAINT "cc_playout_history_file_tag_fkey" FOREIGN KEY ("file_id") REFERENCES "cc_files" ("id") ON DELETE CASCADE;
 
-ALTER TABLE "cc_playout_history" ADD CONSTRAINT "cc_his_item_inst_fkey" FOREIGN KEY ("instance_id") REFERENCES "cc_show_instances" ("id") ON DELETE CASCADE;
+ALTER TABLE "cc_playout_history" ADD CONSTRAINT "cc_his_item_inst_fkey" FOREIGN KEY ("instance_id") REFERENCES "cc_show_instances" ("id") ON DELETE SET NULL;
 
 ALTER TABLE "cc_playout_history_metadata" ADD CONSTRAINT "cc_playout_history_metadata_entry_fkey" FOREIGN KEY ("history_id") REFERENCES "cc_playout_history" ("id") ON DELETE CASCADE;