diff --git a/CHANGELOG.md b/CHANGELOG.md
index f6174ba23..26c2bd920 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,7 +12,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 - Drop unused Composer scripts and add script descriptions (#2740)
 - Migrate the tests to the TYPO3 testing framework
   (#2701, #2702, #2713, #2717, #2731, #2732, #2733, #2734, #2735, #2737, #2739,
-  #2742, #2754, #2756, #2757, #2760, #2764, #2767)
+  #2742, #2754, #2756, #2757, #2760, #2764, #2767, #2768)
 
 ### Deprecated
 
diff --git a/Tests/LegacyUnit/OldModel/AbstractModelTest.php b/Tests/LegacyFunctional/OldModel/AbstractModelTest.php
similarity index 90%
rename from Tests/LegacyUnit/OldModel/AbstractModelTest.php
rename to Tests/LegacyFunctional/OldModel/AbstractModelTest.php
index 856434333..ca6613821 100644
--- a/Tests/LegacyUnit/OldModel/AbstractModelTest.php
+++ b/Tests/LegacyFunctional/OldModel/AbstractModelTest.php
@@ -2,17 +2,24 @@
 
 declare(strict_types=1);
 
-namespace OliverKlee\Seminars\Tests\LegacyUnit\OldModel;
+namespace OliverKlee\Seminars\Tests\LegacyFunctional\OldModel;
 
 use OliverKlee\Oelib\Testing\TestingFramework;
 use OliverKlee\Seminars\Tests\Unit\OldModel\Fixtures\TestingModel;
-use PHPUnit\Framework\TestCase;
+use TYPO3\TestingFramework\Core\Functional\FunctionalTestCase;
 
 /**
  * @covers \OliverKlee\Seminars\OldModel\AbstractModel
  */
-final class AbstractModelTest extends TestCase
+final class AbstractModelTest extends FunctionalTestCase
 {
+    protected $testExtensionsToLoad = [
+        'typo3conf/ext/static_info_tables',
+        'typo3conf/ext/feuserextrafields',
+        'typo3conf/ext/oelib',
+        'typo3conf/ext/seminars',
+    ];
+
     /**
      * @var TestingModel
      */
@@ -61,7 +68,7 @@ protected function setUp(): void
 
     protected function tearDown(): void
     {
-        $this->testingFramework->cleanUp();
+        $this->testingFramework->cleanUpWithoutDatabase();
 
         parent::tearDown();
     }
diff --git a/Tests/LegacyUnit/OldModel/LegacyOrganizerTest.php b/Tests/LegacyFunctional/OldModel/LegacyOrganizerTest.php
similarity index 91%
rename from Tests/LegacyUnit/OldModel/LegacyOrganizerTest.php
rename to Tests/LegacyFunctional/OldModel/LegacyOrganizerTest.php
index 05ed0d41a..e417653ad 100644
--- a/Tests/LegacyUnit/OldModel/LegacyOrganizerTest.php
+++ b/Tests/LegacyFunctional/OldModel/LegacyOrganizerTest.php
@@ -2,17 +2,24 @@
 
 declare(strict_types=1);
 
-namespace OliverKlee\Seminars\Tests\LegacyUnit\OldModel;
+namespace OliverKlee\Seminars\Tests\LegacyFunctional\OldModel;
 
 use OliverKlee\Oelib\Testing\TestingFramework;
 use OliverKlee\Seminars\OldModel\LegacyOrganizer;
-use PHPUnit\Framework\TestCase;
+use TYPO3\TestingFramework\Core\Functional\FunctionalTestCase;
 
 /**
  * @covers \OliverKlee\Seminars\OldModel\LegacyOrganizer
  */
-final class LegacyOrganizerTest extends TestCase
+final class LegacyOrganizerTest extends FunctionalTestCase
 {
+    protected $testExtensionsToLoad = [
+        'typo3conf/ext/static_info_tables',
+        'typo3conf/ext/feuserextrafields',
+        'typo3conf/ext/oelib',
+        'typo3conf/ext/seminars',
+    ];
+
     /**
      * @var LegacyOrganizer
      */
@@ -59,7 +66,7 @@ protected function setUp(): void
 
     protected function tearDown(): void
     {
-        $this->testingFramework->cleanUp();
+        $this->testingFramework->cleanUpWithoutDatabase();
 
         parent::tearDown();
     }
diff --git a/Tests/LegacyUnit/OldModel/LegacyTimeSlotTest.php b/Tests/LegacyFunctional/OldModel/LegacyTimeSlotTest.php
similarity index 93%
rename from Tests/LegacyUnit/OldModel/LegacyTimeSlotTest.php
rename to Tests/LegacyFunctional/OldModel/LegacyTimeSlotTest.php
index d2b69241a..8c86c038d 100644
--- a/Tests/LegacyUnit/OldModel/LegacyTimeSlotTest.php
+++ b/Tests/LegacyFunctional/OldModel/LegacyTimeSlotTest.php
@@ -2,24 +2,31 @@
 
 declare(strict_types=1);
 
-namespace OliverKlee\Seminars\Tests\LegacyUnit\OldModel;
+namespace OliverKlee\Seminars\Tests\LegacyFunctional\OldModel;
 
 use OliverKlee\Oelib\Configuration\ConfigurationRegistry;
 use OliverKlee\Oelib\Configuration\DummyConfiguration;
 use OliverKlee\Oelib\Testing\TestingFramework;
 use OliverKlee\Seminars\Tests\Support\LanguageHelper;
 use OliverKlee\Seminars\Tests\Unit\OldModel\Fixtures\TestingLegacyTimeSlot;
-use PHPUnit\Framework\TestCase;
 use TYPO3\CMS\Core\Database\ConnectionPool;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\TestingFramework\Core\Functional\FunctionalTestCase;
 
 /**
  * @covers \OliverKlee\Seminars\OldModel\LegacyTimeSlot
  */
-final class LegacyTimeSlotTest extends TestCase
+final class LegacyTimeSlotTest extends FunctionalTestCase
 {
     use LanguageHelper;
 
+    protected $testExtensionsToLoad = [
+        'typo3conf/ext/static_info_tables',
+        'typo3conf/ext/feuserextrafields',
+        'typo3conf/ext/oelib',
+        'typo3conf/ext/seminars',
+    ];
+
     /**
      * @var TestingLegacyTimeSlot
      */
@@ -60,7 +67,7 @@ protected function setUp(): void
 
     protected function tearDown(): void
     {
-        $this->testingFramework->cleanUp();
+        $this->testingFramework->cleanUpWithoutDatabase();
 
         parent::tearDown();
     }