diff --git a/core/modules/content_translation/content_translation.admin.inc b/core/modules/content_translation/content_translation.admin.inc
index 8ea5d1c..a96999f 100644
--- a/core/modules/content_translation/content_translation.admin.inc
+++ b/core/modules/content_translation/content_translation.admin.inc
@@ -35,7 +35,7 @@ function content_translation_field_sync_widget(FieldDefinitionInterface $field)
 
     $settings = array('dependent_selectors' => array('instance[settings][translation_sync]' => array('file')));
 
-    $translation_sync = $field->getSetting('translation_sync');
+    $translation_sync = \Drupal::config('content_translation.field_settings')->get($field->id() . '.translation_sync');
     $element = array(
       '#type' => 'checkboxes',
       '#title' => t('Translatable elements'),
diff --git a/core/modules/content_translation/content_translation.module b/core/modules/content_translation/content_translation.module
index 68c0a7e..6fe76e4 100644
--- a/core/modules/content_translation/content_translation.module
+++ b/core/modules/content_translation/content_translation.module
@@ -730,29 +730,29 @@ function content_translation_form_field_ui_field_edit_form_submit($form, array &
  * Implements hook_form_FORM_ID_alter() for 'field_ui_field_instance_edit_form'.
  */
 function content_translation_form_field_ui_field_instance_edit_form_alter(array &$form, array &$form_state, $form_id) {
-  if ($form['#field']->isTranslatable()) {
+  if ($form_state['instance']->isTranslatable()) {
     module_load_include('inc', 'content_translation', 'content_translation.admin');
-    $element = content_translation_field_sync_widget($form['#field']);
+    $element = content_translation_field_sync_widget($form_state['instance']);
     if ($element) {
       $form['instance']['settings']['translation_sync'] = $element;
+      $form['#submit'][] = 'content_translation_form_field_ui_field_instance_edit_form_submit';
     }
   }
 }
 
 /**
+ * Form submission handler for 'field_ui_field_instance_edit_form'.
+ */
+function content_translation_form_field_ui_field_instance_edit_form_submit($form, array &$form_state) {
+  $key = $form_state['instance']->id() . '.translation_sync';
+  $value = $form_state['values']['instance']['settings']['translation_sync'];
+  \Drupal::config('content_translation.field_settings')->set($key, $value)->save();
+}
+
+/**
  * Implements hook_entity_presave().
  */
 function content_translation_entity_presave(EntityInterface $entity) {
-  // By default no column has to be synchronized.
-  // @todo Replace with own storage in https://drupal.org/node/2224761
-  if ($entity->getEntityTypeId() === 'field_config') {
-    $entity->settings += array('translation_sync' => FALSE);
-  }
-  // Synchronization can be enabled per instance.
-  // @todo Replace with own storage in https://drupal.org/node/2224761
-  if ($entity->getEntityTypeId() === 'field_instance_config') {
-    $entity->settings += array('translation_sync' => FALSE);
-  }
   if ($entity instanceof ContentEntityInterface && $entity->isTranslatable()) {
     // @todo Avoid using request attributes once translation metadata become
     //   regular fields.
@@ -915,12 +915,13 @@ function content_translation_save_settings($settings) {
           foreach ($bundle_settings['columns'] as $field_name => $column_settings) {
             $instance = field_info_instance($entity_type, $field_name, $bundle);
             if ($instance->isTranslatable()) {
-              $instance->settings['translation_sync'] = $column_settings;
+              \Drupal::config('content_translation.field_settings')->set($entity_type . '.' . $bundle . '.' . $field_name . '.translation_sync', $column_settings)->save();
             }
             // If the field does not have translatable enabled we need to reset
             // the sync settings to their defaults.
             else {
-              unset($instance->settings['translation_sync']);
+              $key = $entity_type . '.' . $bundle . '.' . $field_name . '.translation_sync';
+              \Drupal::config('content_translation.field_settings')->clear($key)->save();
             }
             $instance->save();
           }
diff --git a/core/modules/content_translation/lib/Drupal/content_translation/FieldTranslationSynchronizer.php b/core/modules/content_translation/lib/Drupal/content_translation/FieldTranslationSynchronizer.php
index 1c8db66..fa1f8b0 100644
--- a/core/modules/content_translation/lib/Drupal/content_translation/FieldTranslationSynchronizer.php
+++ b/core/modules/content_translation/lib/Drupal/content_translation/FieldTranslationSynchronizer.php
@@ -58,7 +58,8 @@ public function synchronizeFields(ContentEntityInterface $entity, $sync_langcode
 
       // Sync if the field is translatable, not empty, and the synchronization
       // setting is enabled.
-      if ($field_definition->isTranslatable() && !$items->isEmpty() && $translation_sync = $field_definition->getSetting('translation_sync')) {
+      $key = $entity->getEntityTypeId() . '.' . $entity->bundle() . '.' . $field_name . '.translation_sync';
+      if ($field_definition->isTranslatable() && !$items->isEmpty() && $translation_sync = \Drupal::config('content_translation.field_settings')->get($key)) {
         // Retrieve all the untranslatable column groups and merge them into
         // single list.
         $groups = array_keys(array_diff($translation_sync, array_filter($translation_sync)));
diff --git a/core/modules/content_translation/lib/Drupal/content_translation/Tests/ContentTranslationSyncImageTest.php b/core/modules/content_translation/lib/Drupal/content_translation/Tests/ContentTranslationSyncImageTest.php
index 3f990db..7085165 100644
--- a/core/modules/content_translation/lib/Drupal/content_translation/Tests/ContentTranslationSyncImageTest.php
+++ b/core/modules/content_translation/lib/Drupal/content_translation/Tests/ContentTranslationSyncImageTest.php
@@ -69,14 +69,31 @@ protected function setupTestFields() {
       'field_name' => $this->fieldName,
       'bundle' => $this->entityTypeId,
       'label' => 'Test translatable image field',
-      'settings' => array(
-        'translation_sync' => array(
-          'file' => FALSE,
-          'alt' => 'alt',
-          'title' => 'title',
+    ))->save();
+
+    // Enable content translation for image field on the test entity.
+    $settings = array(
+      'content_translation' => array(
+        'enabled' => TRUE,
+        'fields' => array(
+          $this->fieldName => TRUE,
         ),
       ),
-    ))->save();
+    );
+    $key = $this->entityTypeId . '.' . $this->entityTypeId;
+    \Drupal::config('content_translation.settings')->set($key, $settings)->save();
+
+    // Enable content translation for the 'alt' and 'title' properties on the
+    // image field.
+    $settings = array(
+      'translation_sync' => array(
+        'file' => FALSE,
+        'alt' => 'alt',
+        'title' => 'title',
+      ),
+    );
+    $key = $this->entityTypeId . '.' . $this->entityTypeId . '.' . $this->fieldName;
+    \Drupal::config('content_translation.field_settings')->set($key, $settings)->save();
   }
 
   /**