fix(targetticket): loss of associated element

Author: btry

inc/targetticket.class.php

@@ -1360,7 +1360,8 @@ private function saveAssociatedItems($input) {
                'NOT' => ['itemtype' => [
                   PluginFormcreatorTargetTicket::class,
                   Ticket::class,
-               ]]
+               ]],
+               self::getForeignKeyField() => $this->getID(),
             ]);
             $targetTicketFk = self::getForeignKeyField();
             foreach ($input['items_id'] as $itemtype => $items) {