diff --git a/hook.php b/hook.php
index a800216ef..fa9bf51fd 100644
--- a/hook.php
+++ b/hook.php
@@ -527,7 +527,8 @@ function plugin_formcreator_hook_delete_ticket(CommonDBTM $item) {
       }
    }
 
-   // Delete the issue
+   // Delete the issue associated to the ticlet
+   // (when a form generated one and only one ticket)
    // TODO: add is_deleted column to issue ?
    $issue = new PluginFormcreatorIssue();
    $issue->deleteByCriteria([
@@ -539,7 +540,14 @@ function plugin_formcreator_hook_delete_ticket(CommonDBTM $item) {
 function plugin_formcreator_hook_restore_ticket(CommonDBTM $item) {
    $formAnswer = new PluginFormcreatorFormAnswer();
    if ($formAnswer->getFromDbByTicket($item)) {
-      $formAnswer->createIssue();
+      $relations = (new Item_Ticket())->find([
+         'itemtype' => $formAnswer->getType(),
+         'items_id' => $formAnswer->getID(),
+      ]);
+      if (count($relations) === 1) {
+         // Recreate the issue when one and only one ticket has been created by the form
+         $formAnswer->createIssue();
+      }
       $minimalStatus = $formAnswer->getAggregatedStatus();
       if ($minimalStatus !== null) {
          $formAnswer->updateStatus($minimalStatus);
diff --git a/tests/2-integration/PluginFormcreatorFormAnswer.php b/tests/2-integration/PluginFormcreatorFormAnswer.php
index 19ee886ea..b9631790d 100644
--- a/tests/2-integration/PluginFormcreatorFormAnswer.php
+++ b/tests/2-integration/PluginFormcreatorFormAnswer.php
@@ -31,8 +31,10 @@
 namespace tests\units;
 use GlpiPlugin\Formcreator\Tests\CommonTestCase;
 use PluginFormcreatorForm_Validator;
+use PluginFormcreatorIssue;
 use Search;
 use TicketValidation;
+use Ticket;
 
 /**
  * The methods conflict when running in parallel
@@ -304,4 +306,172 @@ public function testGetMyLastAnswersAsValidator() {
          $this->boolean(in_array($id, $formAnswers))->isTrue();
       }
    }
+
+   /**
+    * Undocumented function
+    *
+    * @return void
+    */
+   public function testDeleteTicket() {
+      $form = $this->getForm();
+
+      $targetTicket1 = $this->getTargetTicket([
+         $form::getForeignKeyField() => $form->getID(),
+      ]);
+      $formAnswer = $this->newTestedInstance();
+      $formAnswer->add([
+         'plugin_formcreator_forms_id' => $form->getID(),
+      ]);
+      $this->boolean($formAnswer->isNewItem())->isFalse();
+      $this->array($formAnswer->targetList)->hasSize(1);
+      /** @var Ticket */
+      $ticket = $formAnswer->targetList[0];
+      $issue = new PluginFormcreatorIssue();
+      $issue->getFromDbByCrit([
+         'itemtype' => $ticket::getType(),
+         'items_id' => $ticket->getID(),
+      ]);
+      $this->boolean($issue->isNewItem())->isFalse();
+
+      $ticket->delete([
+         'id' => $ticket->getID(),
+      ]);
+
+      // Test the issue has been deleted
+      $issue = new PluginFormcreatorIssue();
+      $issue->getFromDbByCrit([
+         'itemtype' => $ticket::getType(),
+         'items_id' => $ticket->getID(),
+      ]);
+      $this->boolean($issue->isNewItem())->isTrue();
+
+      // Add a 2nd ttarget ticket to the form
+      $targetTicket2 = $this->getTargetTicket([
+         $form::getForeignKeyField() => $form->getID(),
+      ]);
+
+      $formAnswer = $this->newTestedInstance();
+      $formAnswer->add([
+         'plugin_formcreator_forms_id' => $form->getID(),
+      ]);
+      $this->boolean($formAnswer->isNewItem())->isFalse();
+      $this->array($formAnswer->targetList)->hasSize(2);
+      $ticket = $formAnswer->targetList[0];
+      $issue = new PluginFormcreatorIssue();
+      $issue->getFromDbByCrit([
+         'itemtype' => $formAnswer::getType(),
+         'items_id' => $formAnswer->getID(),
+      ]);
+      $this->boolean($issue->isNewItem())->isFalse();
+
+      $ticket->delete([
+         'id' => $ticket->getID(),
+      ]);
+
+      // Test the issue still exists
+      $issue = new PluginFormcreatorIssue();
+      $issue->getFromDbByCrit([
+         'itemtype' => $formAnswer::getType(),
+         'items_id' => $formAnswer->getID(),
+      ]);
+      $this->boolean($issue->isNewItem())->isFalse();
+   }
+
+   /**
+    * Undocumented function
+    *
+    * @return void
+    */
+    public function testRestoreTicket() {
+      $form = $this->getForm();
+
+      $targetTicket = $this->getTargetTicket([
+         $form::getForeignKeyField() => $form->getID(),
+      ]);
+      $formAnswer = $this->newTestedInstance();
+      $formAnswer->add([
+         'plugin_formcreator_forms_id' => $form->getID(),
+      ]);
+      $this->boolean($formAnswer->isNewItem())->isFalse();
+      $this->array($formAnswer->targetList)->hasSize(1);
+      /** @var Ticket */
+      $ticket = $formAnswer->targetList[0];
+      $issue = new PluginFormcreatorIssue();
+      $issue->getFromDbByCrit([
+         'itemtype' => $ticket::getType(),
+         'items_id' => $ticket->getID(),
+      ]);
+      $this->boolean($issue->isNewItem())->isFalse();
+
+      $ticket->delete([
+         'id' => $ticket->getID(),
+      ]);
+
+      // Test the issue has been deleted
+      $issue = new PluginFormcreatorIssue();
+      $issue->getFromDbByCrit([
+         'itemtype' => $ticket::getType(),
+         'items_id' => $ticket->getID(),
+      ]);
+      $this->boolean($issue->isNewItem())->isTrue();
+
+      // Restore the ticket (triggers plugin's hook)
+      $ticket->restore([
+         'id' => $ticket->getID(),
+      ]);
+
+      // Test the issue has been recreated
+      $issue = new PluginFormcreatorIssue();
+      $issue->getFromDbByCrit([
+         'itemtype' => $ticket::getType(),
+         'items_id' => $ticket->getID(),
+      ]);
+      $this->boolean($issue->isNewItem())->isFalse();
+
+      // Add a 2nd ttarget ticket to the form
+      $targetTicket2 = $this->getTargetTicket([
+         $form::getForeignKeyField() => $form->getID(),
+      ]);
+
+      $formAnswer = $this->newTestedInstance();
+      $formAnswer->add([
+         'plugin_formcreator_forms_id' => $form->getID(),
+      ]);
+      $this->boolean($formAnswer->isNewItem())->isFalse();
+      $this->array($formAnswer->targetList)->hasSize(2);
+      $ticket = $formAnswer->targetList[0];
+      $issue = new PluginFormcreatorIssue();
+      $issue->getFromDbByCrit([
+         'itemtype' => $formAnswer::getType(),
+         'items_id' => $formAnswer->getID(),
+      ]);
+      $this->boolean($issue->isNewItem())->isFalse();
+
+      $ticket->delete([
+         'id' => $ticket->getID(),
+      ]);
+
+      // Test the issue still exists
+      $issue = new PluginFormcreatorIssue();
+      $issue->getFromDbByCrit([
+         'itemtype' => $formAnswer::getType(),
+         'items_id' => $formAnswer->getID(),
+      ]);
+      $this->boolean($issue->isNewItem())->isFalse();
+
+      // Restore the ticket (triggers plugin's hook)
+      $ticket->restore([
+         'id' => $ticket->getID(),
+      ]);
+
+      // Test there is still only 1 issue
+      $issue = new PluginFormcreatorIssue();
+      $issue->getFromDbByCrit([
+         'itemtype' => $formAnswer::getType(),
+         'items_id' => $formAnswer->getID(),
+      ]);
+      // If no issue or several issues matches the previous request,
+      // then the issue is not populated from DB
+      $this->boolean($issue->isNewItem())->isFalse();
+   }
 }