diff --git a/src/CoreBundle/Entity/CourseRelUser.php b/src/CoreBundle/Entity/CourseRelUser.php
index bb3baff792..7a9e3356a9 100644
--- a/src/CoreBundle/Entity/CourseRelUser.php
+++ b/src/CoreBundle/Entity/CourseRelUser.php
@@ -60,12 +60,12 @@ class CourseRelUser implements Stringable
     protected ?int $id = null;
 
     #[Groups(['course:read', 'user:read', 'course_rel_user:read'])]
-    #[ORM\ManyToOne(targetEntity: User::class, inversedBy: 'courses', cascade: ['persist'])]
-    #[ORM\JoinColumn(name: 'user_id', referencedColumnName: 'id')]
+    #[ORM\ManyToOne(targetEntity: User::class, cascade: ['persist'], inversedBy: 'courses')]
+    #[ORM\JoinColumn(name: 'user_id', referencedColumnName: 'id', onDelete: 'CASCADE')]
     protected User $user;
 
     #[Groups(['course_rel_user:read'])]
-    #[ORM\ManyToOne(targetEntity: Course::class, inversedBy: 'users', cascade: ['persist'])]
+    #[ORM\ManyToOne(targetEntity: Course::class, cascade: ['persist'], inversedBy: 'users')]
     #[ORM\JoinColumn(name: 'c_id', referencedColumnName: 'id', onDelete: 'CASCADE')]
     protected Course $course;
 
diff --git a/src/CoreBundle/Entity/TrackEAttemptQualify.php b/src/CoreBundle/Entity/TrackEAttemptQualify.php
index 0582f61f01..27b670d634 100644
--- a/src/CoreBundle/Entity/TrackEAttemptQualify.php
+++ b/src/CoreBundle/Entity/TrackEAttemptQualify.php
@@ -53,7 +53,7 @@ class TrackEAttemptQualify
     protected ?string $answer;
 
     #[ORM\ManyToOne(inversedBy: 'revisedAttempts')]
-    #[ORM\JoinColumn(name: 'exe_id', referencedColumnName: 'exe_id', nullable: false)]
+    #[ORM\JoinColumn(name: 'exe_id', referencedColumnName: 'exe_id', nullable: false, onDelete: 'CASCADE')]
     private ?TrackEExercise $trackExercise = null;
 
     public function __construct()
diff --git a/src/CoreBundle/EventSubscriber/AnonymousUserSubscriber.php b/src/CoreBundle/EventSubscriber/AnonymousUserSubscriber.php
index 7948785e1b..d7c49f4fa0 100644
--- a/src/CoreBundle/EventSubscriber/AnonymousUserSubscriber.php
+++ b/src/CoreBundle/EventSubscriber/AnonymousUserSubscriber.php
@@ -6,8 +6,6 @@ declare(strict_types=1);
 
 namespace Chamilo\CoreBundle\EventSubscriber;
 
-use Chamilo\CoreBundle\Entity\TrackEAttemptQualify;
-use Chamilo\CoreBundle\Entity\TrackEExercise;
 use Chamilo\CoreBundle\Entity\TrackELogin;
 use Chamilo\CoreBundle\Entity\User;
 use Chamilo\CoreBundle\Settings\SettingsManager;
@@ -125,8 +123,6 @@ class AnonymousUserSubscriber implements EventSubscriberInterface
             if ($oldestAnonymousUser) {
                 error_log('Deleting oldest anonymous user: '.$oldestAnonymousUser->getId());
 
-                $this->handleRelatedEntities($oldestAnonymousUser);
-
                 $this->entityManager->remove($oldestAnonymousUser);
                 $this->entityManager->flush();
             }
@@ -158,30 +154,4 @@ class AnonymousUserSubscriber implements EventSubscriberInterface
 
         return $anonymousUser->getId();
     }
-
-    private function handleRelatedEntities(User $user): void
-    {
-        $trackEExercisesRepository = $this->entityManager->getRepository(TrackEExercise::class);
-
-        $exercises = $trackEExercisesRepository->findBy(['user' => $user->getId()]);
-
-        foreach ($exercises as $exercise) {
-            $this->handleAttemptRecordings($exercise);
-
-            $this->entityManager->remove($exercise);
-        }
-
-        $this->entityManager->flush();
-    }
-
-    private function handleAttemptRecordings(TrackEExercise $exercise): void
-    {
-        $trackEAttemptRecordingRepository = $this->entityManager->getRepository(TrackEAttemptQualify::class);
-
-        $attemptRecordings = $trackEAttemptRecordingRepository->findBy(['trackExercise' => $exercise->getExeId()]);
-
-        foreach ($attemptRecordings as $attemptRecording) {
-            $this->entityManager->remove($attemptRecording);
-        }
-    }
 }