diff --git a/install/upgrade_to_2.10.2.php b/install/upgrade_to_2.10.2.php
index 5c9f8c040..3a0156cda 100644
--- a/install/upgrade_to_2.10.2.php
+++ b/install/upgrade_to_2.10.2.php
@@ -43,6 +43,100 @@ public function upgrade(Migration $migration) {
       // Versioin 2.10.2 contains fixes on counters requiring repopulation of issues table
       $table = 'glpi_plugin_formcreator_issues';
       $DB->query("TRUNCATE `$table`");
-      PluginFormcreatorIssue::cronSyncIssues(new CronTask());
+      $this->syncIssues(new CronTask());
+   }
+
+   /**
+    * This is a copy of PluginFormcreatorIssue::cronSyncIssues as it is in 2.10.2
+    *
+    * @param CronTask $task
+    * @return void
+    */
+   public function syncIssues(CronTask $task) {
+      global $DB;
+
+      $task->log("Sync issues from forms answers and tickets");
+      $volume = 0;
+
+      // Request which merges tickets and formanswers
+      // 1 ticket not linked to a formanswer => 1 issue which is the ticket sub_itemtype
+      // 1 form_answer not linked to a ticket => 1 issue which is the formanswer sub_itemtype
+      // 1 ticket linked to 1 form_answer => 1 issue which is the ticket sub_itemtype
+      // several tickets linked to the same form_answer => 1 issue which is the form_answer sub_itemtype
+      $query = "SELECT DISTINCT
+                  NULL                            AS `id`,
+                  `f`.`name`                      AS `name`,
+                  CONCAT('f_',`fanswer`.`id`)     AS `display_id`,
+                  `fanswer`.`id`                  AS `original_id`,
+                  'PluginFormcreatorFormAnswer'   AS `sub_itemtype`,
+                  `fanswer`.`status`              AS `status`,
+                  `fanswer`.`request_date`        AS `date_creation`,
+                  `fanswer`.`request_date`        AS `date_mod`,
+                  `fanswer`.`entities_id`         AS `entities_id`,
+                  `fanswer`.`is_recursive`        AS `is_recursive`,
+                  `fanswer`.`requester_id`        AS `requester_id`,
+                  `fanswer`.`users_id_validator`  AS `users_id_validator`,
+                  `fanswer`.`groups_id_validator` AS `groups_id_validator`,
+                  `fanswer`.`comment`             AS `comment`
+               FROM `glpi_plugin_formcreator_formanswers` AS `fanswer`
+               LEFT JOIN `glpi_plugin_formcreator_forms` AS `f`
+                  ON`f`.`id` = `fanswer`.`plugin_formcreator_forms_id`
+               LEFT JOIN `glpi_items_tickets` AS `itic`
+                  ON `itic`.`items_id` = `fanswer`.`id`
+                  AND `itic`.`itemtype` = 'PluginFormcreatorFormAnswer'
+               GROUP BY `original_id`
+               HAVING COUNT(`itic`.`tickets_id`) != 1
+               UNION
+               SELECT DISTINCT
+                  NULL                          AS `id`,
+                  `tic`.`name`                  AS `name`,
+                  CONCAT('t_',`tic`.`id`)       AS `display_id`,
+                  `tic`.`id`                    AS `original_id`,
+                  'Ticket'                      AS `sub_itemtype`,
+                  if(`tv`.`status` IS NULL,`tic`.`status`, if(`tv`.`status` = 2, 101, if(`tv`.`status` = 3, `tic`.`status`, 102))) AS `status`,
+                  `tic`.`date`                  AS `date_creation`,
+                  `tic`.`date_mod`              AS `date_mod`,
+                  `tic`.`entities_id`           AS `entities_id`,
+                  0                             AS `is_recursive`,
+                  `tu`.`users_id`               AS `requester_id`,
+                  `tv`.`users_id_validate`      AS `users_id_validator`,
+                  0                             AS `groups_id_validator`,
+                  `tic`.`content`               AS `comment`
+               FROM `glpi_tickets` AS `tic`
+               LEFT JOIN `glpi_items_tickets` AS `itic`
+                  ON `itic`.`tickets_id` = `tic`.`id`
+                  AND `itic`.`itemtype` = 'PluginFormcreatorFormAnswer'
+               LEFT JOIN (
+                  SELECT DISTINCT `users_id`, `tickets_id`
+                  FROM `glpi_tickets_users` AS `tu`
+                  WHERE `tu`.`type` = '"  . CommonITILActor::REQUESTER . "'
+                  ORDER BY `id` ASC
+               ) AS `tu` ON (`tic`.`id` = `tu`.`tickets_id`)
+               LEFT JOIN `glpi_ticketvalidations` as `tv`
+                  ON (`tic`.`id` = `tv`.`tickets_id`)
+               WHERE `tic`.`is_deleted` = 0
+               GROUP BY `original_id`
+               HAVING COUNT(`itic`.`items_id`) <= 1";
+
+      $countQuery = "SELECT COUNT(*) AS `cpt` FROM ($query) AS `issues`";
+      $result = $DB->query($countQuery);
+      if ($result !== false) {
+         if (version_compare(GLPI_VERSION, '9.5') < 0) {
+            $fa = 'fetch_assoc';
+         } else {
+            $fa = 'fetchAssoc';
+         }
+         $count = $DB->$fa($result);
+         $table = 'glpi_plugin_formcreator_issues';
+         if (countElementsInTable($table) != $count['cpt']) {
+            if ($DB->query("TRUNCATE `$table`")) {
+               $DB->query("INSERT INTO `$table` SELECT * FROM ($query) as `dt`");
+               $volume = 1;
+            }
+         }
+      }
+      $task->setVolume($volume);
+
+      return 1;
    }
 }