diff --git a/typo3/sysext/backend/ext_localconf.php b/typo3/sysext/backend/ext_localconf.php
index 897060824c9463a7e1478e3f167e02524240a374..d3c15687601bae8d84261123c3c27ee21f25601d 100644
--- a/typo3/sysext/backend/ext_localconf.php
+++ b/typo3/sysext/backend/ext_localconf.php
@@ -29,7 +29,9 @@ $GLOBALS['TYPO3_CONF_VARS']['SYS']['formEngine']['nodeRegistry'][1460321142] = [
 $GLOBALS['TYPO3_CONF_VARS']['SYS']['livesearch']['page'] = 'pages';
 
 // Include base TSconfig setup
-\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addPageTSConfig('<INCLUDE_TYPOSCRIPT: source="FILE:EXT:backend/Configuration/TSconfig/Page/Mod/Wizards/NewContentElement.tsconfig">');
+\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addPageTSConfig(
+    "@import 'EXT:backend/Configuration/TSconfig/Page/Mod/Wizards/NewContentElement.tsconfig'"
+);
 
 // Register BackendLayoutDataProvider for PageTs
 $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['BackendLayoutDataProvider']['pagets'] = \TYPO3\CMS\Backend\Provider\PageTsBackendLayoutDataProvider::class;
diff --git a/typo3/sysext/form/ext_localconf.php b/typo3/sysext/form/ext_localconf.php
index b9cda2f07234edb3b62bc91068438e815816fcae..963c793cb43ce6090a356276287bf16996760a4d 100644
--- a/typo3/sysext/form/ext_localconf.php
+++ b/typo3/sysext/form/ext_localconf.php
@@ -36,7 +36,7 @@ call_user_func(function () {
 
     // Add new content element wizard entry
     \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addPageTSConfig(
-        '<INCLUDE_TYPOSCRIPT: source="FILE:EXT:form/Configuration/PageTS/modWizards.tsconfig">'
+        "@import 'EXT:form/Configuration/PageTS/modWizards.tsconfig'"
     );
 
     // Add module configuration
diff --git a/typo3/sysext/frontend/ext_localconf.php b/typo3/sysext/frontend/ext_localconf.php
index c24c140c222051ec4fff7c01e43387b313e3f06b..2e07efb00156a7e1f5675d5865cb99d18272761d 100644
--- a/typo3/sysext/frontend/ext_localconf.php
+++ b/typo3/sysext/frontend/ext_localconf.php
@@ -95,9 +95,9 @@ $GLOBALS['TYPO3_CONF_VARS']['SYS']['livesearch']['content'] = 'tt_content';
 
 // Include new content elements to modWizards
 \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addPageTSConfig(
-    '<INCLUDE_TYPOSCRIPT: source="FILE:EXT:frontend/Configuration/TSconfig/Page/Mod/Wizards/NewContentElement.tsconfig">'
+    "@import 'EXT:frontend/Configuration/TSconfig/Page/Mod/Wizards/NewContentElement.tsconfig'"
 );
 // Include FormEngine adjustments
 \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addPageTSConfig(
-    '<INCLUDE_TYPOSCRIPT: source="FILE:EXT:frontend/Configuration/TSconfig/Page/TCEFORM.tsconfig">'
+    "@import 'EXT:frontend/Configuration/TSconfig/Page/TCEFORM.tsconfig'"
 );
diff --git a/typo3/sysext/linkvalidator/ext_localconf.php b/typo3/sysext/linkvalidator/ext_localconf.php
index 8f039aa29c9c6106c53a6c8669ec54df4dc8f847..63418231a29de0053fbb36453fd98144e1958ce2 100644
--- a/typo3/sysext/linkvalidator/ext_localconf.php
+++ b/typo3/sysext/linkvalidator/ext_localconf.php
@@ -2,7 +2,7 @@
 defined('TYPO3_MODE') or die();
 
 \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addPageTSConfig(
-    '<INCLUDE_TYPOSCRIPT: source="FILE:EXT:linkvalidator/Configuration/TsConfig/Page/pagetsconfig.tsconfig">'
+    "@import 'EXT:linkvalidator/Configuration/TsConfig/Page/pagetsconfig.tsconfig'"
 );
 
 $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['scheduler']['tasks'][\TYPO3\CMS\Linkvalidator\Task\ValidatorTask::class] = [