diff --git a/core/modules/file/src/Plugin/migrate/process/d6/FieldFile.php b/core/modules/file/src/Plugin/migrate/process/d6/FieldFile.php
index 3b907a3607..57fe50fe20 100644
--- a/core/modules/file/src/Plugin/migrate/process/d6/FieldFile.php
+++ b/core/modules/file/src/Plugin/migrate/process/d6/FieldFile.php
@@ -60,7 +60,7 @@ public static function create(ContainerInterface $container, array $configuratio
       $plugin_id,
       $plugin_definition,
       $migration,
-      $container->get('plugin.manager.migrate.process')->createInstance('migration', $migration_plugin_configuration, $migration)
+      $container->get('plugin.manager.migrate.process')->createInstance('migration_lookup', $migration_plugin_configuration, $migration)
     );
   }
 
diff --git a/core/modules/filter/src/Plugin/migrate/process/d6/FilterFormatPermission.php b/core/modules/filter/src/Plugin/migrate/process/d6/FilterFormatPermission.php
index ae8fb9da64..9866d2a1ef 100644
--- a/core/modules/filter/src/Plugin/migrate/process/d6/FilterFormatPermission.php
+++ b/core/modules/filter/src/Plugin/migrate/process/d6/FilterFormatPermission.php
@@ -49,7 +49,7 @@ public static function create(ContainerInterface $container, array $configuratio
       $plugin_id,
       $plugin_definition,
       $migration,
-      $container->get('plugin.manager.migrate.process')->createInstance('migration', $migration_plugin_configuration, $migration)
+      $container->get('plugin.manager.migrate.process')->createInstance('migration_lookup', $migration_plugin_configuration, $migration)
     );
   }
 
diff --git a/core/modules/text/src/Plugin/migrate/field/d6/TextField.php b/core/modules/text/src/Plugin/migrate/field/d6/TextField.php
index dba6398a06..6eeb95f6d0 100644
--- a/core/modules/text/src/Plugin/migrate/field/d6/TextField.php
+++ b/core/modules/text/src/Plugin/migrate/field/d6/TextField.php
@@ -80,7 +80,7 @@ public function defineValueProcessPipeline(MigrationInterface $migration, $field
             'method' => 'process',
           ],
           [
-            'plugin' => 'migration',
+            'plugin' => 'migration_lookup',
             'migration' => [
               'd6_filter_format',
               'd7_filter_format',
diff --git a/core/tests/Drupal/Tests/Listeners/DeprecationListenerTrait.php b/core/tests/Drupal/Tests/Listeners/DeprecationListenerTrait.php
index f506af69ce..7d778509bc 100644
--- a/core/tests/Drupal/Tests/Listeners/DeprecationListenerTrait.php
+++ b/core/tests/Drupal/Tests/Listeners/DeprecationListenerTrait.php
@@ -119,7 +119,7 @@ public static function getSkippedDeprecations() {
       'Using UTF-8 route patterns without setting the "utf8" option is deprecated since Symfony 3.2 and will throw a LogicException in 4.0. Turn on the "utf8" route option for pattern "/place/meφω".',
       'Using UTF-8 route patterns without setting the "utf8" option is deprecated since Symfony 3.2 and will throw a LogicException in 4.0. Turn on the "utf8" route option for pattern "/PLACE/meφω".',
       'The Drupal\editor\Plugin\EditorBase::settingsFormValidate method is deprecated since version 8.3.x and will be removed in 9.0.0.',
-      'The Drupal\migrate\Plugin\migrate\process\Migration is deprecated in Drupal 8.4.0 and will be removed before Drupal 9.0.0. Instead, use Drupal\migrate\Plugin\migrate\process\MigrationLookup',
+//      'The Drupal\migrate\Plugin\migrate\process\Migration is deprecated in Drupal 8.4.0 and will be removed before Drupal 9.0.0. Instead, use Drupal\migrate\Plugin\migrate\process\MigrationLookup',
       'Drupal\system\Plugin\views\field\BulkForm is deprecated in Drupal 8.5.x, will be removed before Drupal 9.0.0. Use \Drupal\views\Plugin\views\field\BulkForm instead. See https://www.drupal.org/node/2916716.',
       'The numeric plugin for watchdog.wid field is deprecated in Drupal 8.4.0 and will be removed before Drupal 9.0.0. Must use standard plugin instead. See https://www.drupal.org/node/2876378.',
       'Passing in arguments the legacy way is deprecated in Drupal 8.4.0 and will be removed before Drupal 9.0.0. Provide the right parameter names in the method, similar to controllers. See https://www.drupal.org/node/2894819',