diff --git a/typo3/sysext/core/Configuration/TCA/pages.php b/typo3/sysext/core/Configuration/TCA/pages.php
index 900f92e4e8e925828bdd32cce73cbd278e1b187d..1b3689ecc5cc3b72959942fcece871c9efcf8269 100644
--- a/typo3/sysext/core/Configuration/TCA/pages.php
+++ b/typo3/sysext/core/Configuration/TCA/pages.php
@@ -189,7 +189,6 @@ return [
         ],
         'hidden' => [
             'exclude' => true,
-            'l10n_mode' => 'exclude',
             'label' => 'LLL:EXT:frontend/Resources/Private/Language/locallang_tca.xlf:pages.hidden',
             'config' => [
                 'type' => 'check',
@@ -203,18 +202,19 @@ return [
         ],
         'starttime' => [
             'exclude' => true,
-            'l10n_mode' => 'exclude',
             'label' => 'LLL:EXT:lang/Resources/Private/Language/locallang_general.xlf:LGL.starttime',
             'config' => [
                 'type' => 'input',
                 'renderType' => 'inputDateTime',
                 'eval' => 'datetime',
-                'default' => 0
+                'default' => 0,
+                'behaviour' => [
+                    'allowLanguageSynchronization' => true
+                ]
             ]
         ],
         'endtime' => [
             'exclude' => true,
-            'l10n_mode' => 'exclude',
             'label' => 'LLL:EXT:lang/Resources/Private/Language/locallang_general.xlf:LGL.endtime',
             'config' => [
                 'type' => 'input',
@@ -223,6 +223,9 @@ return [
                 'default' => 0,
                 'range' => [
                     'upper' => mktime(0, 0, 0, 1, 1, 2038)
+                ],
+                'behaviour' => [
+                    'allowLanguageSynchronization' => true
                 ]
             ]
         ],
diff --git a/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizeNCopyPageWSynchronization.csv b/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizeNCopyPageWSynchronization.csv
index 569284d74991ceefed1dcb5a5e58818c7584f784..ee5b9b359fa2310301df5e07d43f71c3ac470f8c 100644
--- a/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizeNCopyPageWSynchronization.csv
+++ b/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizeNCopyPageWSynchronization.csv
@@ -4,9 +4,9 @@ pages
 ,88,1,256,0,0,0,0,0,0,0,0,0,DataHandlerTest,0,
 ,89,88,256,0,0,0,0,0,0,0,0,0,Relations,1,
 ,90,88,512,0,0,0,0,0,0,0,0,0,Target,0,
-,91,88,256,0,1,89,0,0,0,0,0,0,"[Translate to Dansk:] Relations",1,"{""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent"",""tx_irretutorial_hotels"":""parent""}"
+,91,88,256,0,1,89,0,0,0,0,0,0,"[Translate to Dansk:] Relations",1,"{""starttime"":""parent"",""endtime"":""parent"",""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent"",""tx_irretutorial_hotels"":""parent""}"
 ,92,90,256,0,0,0,89,0,0,0,0,0,Relations,1,
-,93,90,256,0,1,92,91,0,0,0,0,0,"[Translate to Dansk:] Relations",1,"{""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent"",""tx_irretutorial_hotels"":""parent""}"
+,93,90,256,0,1,92,91,0,0,0,0,0,"[Translate to Dansk:] Relations",1,"{""starttime"":""parent"",""endtime"":""parent"",""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent"",""tx_irretutorial_hotels"":""parent""}"
 tt_content
 ,uid,pid,sorting,deleted,sys_language_uid,l18n_parent,t3_origuid,t3ver_wsid,t3ver_state,t3ver_stage,t3ver_oid,t3ver_move_id,header,tx_irretutorial_1nff_hotels
 ,297,89,256,0,0,0,0,0,0,0,0,0,"Regular Element #1",2
diff --git a/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageAddMonoglotHotelChildNCopyPageWSynchronization.csv b/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageAddMonoglotHotelChildNCopyPageWSynchronization.csv
index be2da9bd0ce72c61129f89b03094c1034398c129..e77352b5524426088207be40f90036debccf8d27 100644
--- a/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageAddMonoglotHotelChildNCopyPageWSynchronization.csv
+++ b/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageAddMonoglotHotelChildNCopyPageWSynchronization.csv
@@ -4,9 +4,9 @@ pages
 ,88,1,256,0,0,0,0,0,0,0,0,0,DataHandlerTest,0,
 ,89,88,256,0,0,0,0,0,0,0,0,0,Relations,2,
 ,90,88,512,0,0,0,0,0,0,0,0,0,Target,0,
-,91,88,256,0,1,89,0,0,0,0,0,0,"[Translate to Dansk:] Relations",2,"{""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent"",""tx_irretutorial_hotels"":""parent""}"
+,91,88,256,0,1,89,0,0,0,0,0,0,"[Translate to Dansk:] Relations",2,"{""starttime"":""parent"",""endtime"":""parent"",""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent"",""tx_irretutorial_hotels"":""parent""}"
 ,92,90,256,0,0,0,89,0,0,0,0,0,Relations,2,
-,93,90,256,0,1,92,91,0,0,0,0,0,"[Translate to Dansk:] Relations",2,"{""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent"",""tx_irretutorial_hotels"":""parent""}"
+,93,90,256,0,1,92,91,0,0,0,0,0,"[Translate to Dansk:] Relations",2,"{""starttime"":""parent"",""endtime"":""parent"",""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent"",""tx_irretutorial_hotels"":""parent""}"
 tt_content
 ,uid,pid,sorting,deleted,sys_language_uid,l18n_parent,t3_origuid,t3ver_wsid,t3ver_state,t3ver_stage,t3ver_oid,t3ver_move_id,header,tx_irretutorial_1nff_hotels
 ,297,89,256,0,0,0,0,0,0,0,0,0,"Regular Element #1",2
diff --git a/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageNAddHotelChildWExclude.csv b/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageNAddHotelChildWExclude.csv
index 015a731455f44cb6e47cd76acb6a9a9c719ecec4..4d4e41a49696ea0f3ddf4ee4c4e85ee935c9fa19 100644
--- a/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageNAddHotelChildWExclude.csv
+++ b/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageNAddHotelChildWExclude.csv
@@ -4,7 +4,7 @@ pages
 ,88,1,256,0,0,0,0,0,0,0,0,0,DataHandlerTest,0,
 ,89,88,256,0,0,0,0,0,0,0,0,0,Relations,2,
 ,90,88,512,0,0,0,0,0,0,0,0,0,Target,0,
-,91,88,256,0,1,89,0,0,0,0,0,0,"[Translate to Dansk:] Relations",2,"{""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent""}"
+,91,88,256,0,1,89,0,0,0,0,0,0,"[Translate to Dansk:] Relations",2,"{""starttime"":""parent"",""endtime"":""parent"",""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent""}"
 tt_content
 ,uid,pid,sorting,deleted,sys_language_uid,l18n_parent,t3_origuid,t3ver_wsid,t3ver_state,t3ver_stage,t3ver_oid,t3ver_move_id,header,tx_irretutorial_1nff_hotels
 ,297,89,256,0,0,0,0,0,0,0,0,0,"Regular Element #1",2
diff --git a/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageNAddHotelChildWSynchronization.csv b/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageNAddHotelChildWSynchronization.csv
index db421d57a6d27bb52f1e3561aa6fc6944655e394..f70b4e04f91a42ae42bd01a88e22cea2970e78c4 100644
--- a/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageNAddHotelChildWSynchronization.csv
+++ b/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageNAddHotelChildWSynchronization.csv
@@ -4,7 +4,7 @@ pages
 ,88,1,256,0,0,0,0,0,0,0,0,0,DataHandlerTest,0,
 ,89,88,256,0,0,0,0,0,0,0,0,0,Relations,2,
 ,90,88,512,0,0,0,0,0,0,0,0,0,Target,0,
-,91,88,256,0,1,89,0,0,0,0,0,0,"[Translate to Dansk:] Relations",2,"{""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent"",""tx_irretutorial_hotels"":""parent""}"
+,91,88,256,0,1,89,0,0,0,0,0,0,"[Translate to Dansk:] Relations",2,"{""starttime"":""parent"",""endtime"":""parent"",""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent"",""tx_irretutorial_hotels"":""parent""}"
 tt_content
 ,uid,pid,sorting,deleted,sys_language_uid,l18n_parent,t3_origuid,t3ver_wsid,t3ver_state,t3ver_stage,t3ver_oid,t3ver_move_id,header,tx_irretutorial_1nff_hotels
 ,297,89,256,0,0,0,0,0,0,0,0,0,"Regular Element #1",2
diff --git a/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageNAddMonoglotHotelChildWSynchronization.csv b/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageNAddMonoglotHotelChildWSynchronization.csv
index 8bc243932a149c0a8726f69b4459f3c51d089b3d..d41db644d95a541a748be8fa063ffba189e3c980 100644
--- a/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageNAddMonoglotHotelChildWSynchronization.csv
+++ b/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageNAddMonoglotHotelChildWSynchronization.csv
@@ -4,7 +4,7 @@ pages
 ,88,1,256,0,0,0,0,0,0,0,0,0,DataHandlerTest,0,
 ,89,88,256,0,0,0,0,0,0,0,0,0,Relations,2,
 ,90,88,512,0,0,0,0,0,0,0,0,0,Target,0,
-,91,88,256,0,1,89,0,0,0,0,0,0,"[Translate to Dansk:] Relations",2,"{""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent"",""tx_irretutorial_hotels"":""parent""}"
+,91,88,256,0,1,89,0,0,0,0,0,0,"[Translate to Dansk:] Relations",2,"{""starttime"":""parent"",""endtime"":""parent"",""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent"",""tx_irretutorial_hotels"":""parent""}"
 tt_content
 ,uid,pid,sorting,deleted,sys_language_uid,l18n_parent,t3_origuid,t3ver_wsid,t3ver_state,t3ver_stage,t3ver_oid,t3ver_move_id,header,tx_irretutorial_1nff_hotels
 ,297,89,256,0,0,0,0,0,0,0,0,0,"Regular Element #1",2
diff --git a/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageWSynchronization.csv b/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageWSynchronization.csv
index e4af05dfa80f17da8d9558d0aad7d1d6d01f7b43..91a9ea667504e1fda621d79bae9a9f48766938fb 100644
--- a/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageWSynchronization.csv
+++ b/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageWSynchronization.csv
@@ -4,7 +4,7 @@ pages
 ,88,1,256,0,0,0,0,0,0,0,0,0,DataHandlerTest,0,
 ,89,88,256,0,0,0,0,0,0,0,0,0,Relations,1,
 ,90,88,512,0,0,0,0,0,0,0,0,0,Target,0,
-,91,88,256,0,1,89,0,0,0,0,0,0,"[Translate to Dansk:] Relations",1,"{""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent"",""tx_irretutorial_hotels"":""parent""}"
+,91,88,256,0,1,89,0,0,0,0,0,0,"[Translate to Dansk:] Relations",1,"{""starttime"":""parent"",""endtime"":""parent"",""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent"",""tx_irretutorial_hotels"":""parent""}"
 tt_content
 ,uid,pid,sorting,deleted,sys_language_uid,l18n_parent,t3_origuid,t3ver_wsid,t3ver_state,t3ver_stage,t3ver_oid,t3ver_move_id,header,tx_irretutorial_1nff_hotels
 ,297,89,256,0,0,0,0,0,0,0,0,0,"Regular Element #1",2
diff --git a/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageWithSynchronizationAndCustomLocalizedHotel.csv b/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageWithSynchronizationAndCustomLocalizedHotel.csv
index f8e6da3c42a3b9b3630a6b1dca62e63c4a54e4d2..92c44ed82f7f3fb76c8039156f0cc8e874f569cf 100644
--- a/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageWithSynchronizationAndCustomLocalizedHotel.csv
+++ b/typo3/sysext/core/Tests/Functional/DataHandling/IRRE/ForeignField/Modify/DataSet/localizePageWithSynchronizationAndCustomLocalizedHotel.csv
@@ -4,7 +4,7 @@ pages
 ,88,1,256,0,0,0,0,0,0,0,0,0,DataHandlerTest,0,
 ,89,88,256,0,0,0,0,0,0,0,0,0,Relations,1,
 ,90,88,512,0,0,0,0,0,0,0,0,0,Target,0,
-,91,88,256,0,1,89,0,0,0,0,0,0,"[Translate to Dansk:] Relations",2,"{""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent"",""tx_irretutorial_hotels"":""custom""}"
+,91,88,256,0,1,89,0,0,0,0,0,0,"[Translate to Dansk:] Relations",2,"{""starttime"":""parent"",""endtime"":""parent"",""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent"",""tx_irretutorial_hotels"":""custom""}"
 tx_irretutorial_1nff_hotel
 ,uid,pid,sorting,deleted,sys_language_uid,l18n_parent,t3_origuid,t3ver_wsid,t3ver_state,t3ver_stage,t3ver_oid,t3ver_move_id,title,parentid,parenttable,parentidentifier,offers
 ,2,89,512,0,0,0,0,0,0,0,0,0,"Hotel #0",89,pages,,0
diff --git a/typo3/sysext/core/Tests/Functional/DataHandling/Regular/Modify/DataSet/localizeNCopyPageWSynchronization.csv b/typo3/sysext/core/Tests/Functional/DataHandling/Regular/Modify/DataSet/localizeNCopyPageWSynchronization.csv
index c259294fe49ac0432de6bf0ca34e9b6de3a96024..0b4ae481f607fac63d5a63dc5cac7bcf74bfa0d1 100644
--- a/typo3/sysext/core/Tests/Functional/DataHandling/Regular/Modify/DataSet/localizeNCopyPageWSynchronization.csv
+++ b/typo3/sysext/core/Tests/Functional/DataHandling/Regular/Modify/DataSet/localizeNCopyPageWSynchronization.csv
@@ -4,9 +4,9 @@ pages
 ,88,1,256,0,0,0,0,0,0,0,0,0,DataHandlerTest,
 ,89,88,256,0,0,0,0,0,0,0,0,0,"Testing #1",
 ,90,88,512,0,0,0,0,0,0,0,0,0,Target,
-,91,88,256,1,89,0,0,0,0,0,0,0,"Testing #1","{""title"":""parent"",""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent""}"
+,91,88,256,1,89,0,0,0,0,0,0,0,"Testing #1","{""title"":""parent"",""starttime"":""parent"",""endtime"":""parent"",""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent""}"
 ,92,90,256,0,0,0,89,0,0,0,0,0,"Testing #1",
-,93,90,256,1,92,0,91,0,0,0,0,0,"Testing #1","{""title"":""parent"",""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent""}"
+,93,90,256,1,92,0,91,0,0,0,0,0,"Testing #1","{""title"":""parent"",""starttime"":""parent"",""endtime"":""parent"",""url"":""parent"",""lastUpdated"":""parent"",""newUntil"":""parent"",""no_search"":""parent"",""shortcut"":""parent"",""shortcut_mode"":""parent"",""author"":""parent"",""author_email"":""parent"",""media"":""parent""}"
 tt_content
 ,uid,pid,sorting,deleted,sys_language_uid,l18n_parent,l10n_source,t3_origuid,t3ver_wsid,t3ver_state,t3ver_stage,t3ver_oid,t3ver_move_id,header
 ,296,88,256,0,0,0,0,0,0,0,0,0,0,"Regular Element #0"