diff --git a/src/Bundle/ChillMainBundle/Form/DataMapper/ExportPickCenterDataMapper.php b/src/Bundle/ChillMainBundle/Form/DataMapper/ExportPickCenterDataMapper.php
index 884f8cb78..0d21b0adb 100644
--- a/src/Bundle/ChillMainBundle/Form/DataMapper/ExportPickCenterDataMapper.php
+++ b/src/Bundle/ChillMainBundle/Form/DataMapper/ExportPickCenterDataMapper.php
@@ -14,8 +14,10 @@ namespace Chill\MainBundle\Form\DataMapper;
 use Chill\MainBundle\Entity\Center;
 use Chill\MainBundle\Entity\Regroupment;
 use Chill\MainBundle\Repository\RegroupmentRepository;
+use Exception;
 use Symfony\Component\Form\DataMapperInterface;
 use Symfony\Component\Form\FormInterface;
+use function count;
 
 class ExportPickCenterDataMapper implements DataMapperInterface
 {
@@ -24,34 +26,39 @@ class ExportPickCenterDataMapper implements DataMapperInterface
     /**
      * @param array|Center[] $data
      * @param $forms
+     *
+     * @throws Exception
+     *
      * @return mixed
-     * @throws \Exception
      */
     public function mapDataToForms($data, $forms)
     {
-       throw new \Exception("not implemented");
+        if (null === $data) {
+            return;
+        }
 
-       /** @var array<string, FormInterface> $form */
-       $form = iterator_to_array($forms);
+        /** @var array<string, FormInterface> $form */
+        $form = iterator_to_array($forms);
 
-       $pickedRegroupment = [];
-       foreach ($this->regroupmentRepository->findAll() as $regroupment) {
-           [$contained, $notContained] = $regroupment->getCenters()->partition(function (Center $center) {
+        $pickedRegroupment = [];
 
-           });
+        foreach ($this->regroupmentRepository->findAll() as $regroupment) {
+            [$contained, $notContained] = $regroupment->getCenters()->partition(static function (Center $center) {
+            });
 
-           if (0 === count($notContained)) {
-               $pickedRegroupment[] = $regroupment;
-           }
-       }
+            if (0 === count($notContained)) {
+                $pickedRegroupment[] = $regroupment;
+            }
+        }
 
-       $form['regroupment']->setData($pickedRegroupment);
-       $form['centers']->setData($data);
+        $form['regroupment']->setData($pickedRegroupment);
+        $form['centers']->setData($data);
     }
 
     /**
      * @param iterable $forms
      * @param array $data
+     *
      * @return void
      */
     public function mapFormsToData($forms, &$data)
diff --git a/src/Bundle/ChillMainBundle/Form/Type/Export/PickCenterType.php b/src/Bundle/ChillMainBundle/Form/Type/Export/PickCenterType.php
index 674f42aa7..17768544b 100644
--- a/src/Bundle/ChillMainBundle/Form/Type/Export/PickCenterType.php
+++ b/src/Bundle/ChillMainBundle/Form/Type/Export/PickCenterType.php
@@ -16,27 +16,15 @@ use Chill\MainBundle\Entity\Center;
 use Chill\MainBundle\Entity\Regroupment;
 use Chill\MainBundle\Export\ExportManager;
 use Chill\MainBundle\Form\DataMapper\ExportPickCenterDataMapper;
-use Chill\MainBundle\Form\DataMapper\PickCenterDataMapper;
-use Chill\MainBundle\Form\DataMapper\RegroupmentDataMapper;
 use Chill\MainBundle\Security\Authorization\AuthorizationHelperInterface;
 use Symfony\Bridge\Doctrine\Form\Type\EntityType;
 use Symfony\Component\Form\AbstractType;
-use Symfony\Component\Form\CallbackTransformer;
-use Symfony\Component\Form\DataMapperInterface;
-use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
 use Symfony\Component\Form\FormBuilderInterface;
-use Symfony\Component\Form\FormInterface;
-use Symfony\Component\Form\FormView;
 use Symfony\Component\OptionsResolver\OptionsResolver;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
 
 use Symfony\Component\Security\Core\User\UserInterface;
-use function array_intersect;
-use function array_key_exists;
-use function array_merge;
-use function array_unique;
 use function count;
-use function in_array;
 
 /**
  * Pick centers amongst available centers for the user.
diff --git a/src/Bundle/ChillMainBundle/Form/Type/Export/PickRegroupmentType.php b/src/Bundle/ChillMainBundle/Form/Type/Export/PickRegroupmentType.php
index e60388fd3..7b04d2ebd 100644
--- a/src/Bundle/ChillMainBundle/Form/Type/Export/PickRegroupmentType.php
+++ b/src/Bundle/ChillMainBundle/Form/Type/Export/PickRegroupmentType.php
@@ -1,10 +1,18 @@
 <?php
 
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
 namespace Chill\MainBundle\Form\Type\Export;
 
 use Symfony\Component\Form\AbstractType;
 
 class PickRegroupmentType extends AbstractType
 {
-
 }