diff -u b/core/modules/link/src/Plugin/migrate/cckfield/LinkField.php b/core/modules/link/src/Plugin/migrate/cckfield/LinkField.php
--- b/core/modules/link/src/Plugin/migrate/cckfield/LinkField.php
+++ b/core/modules/link/src/Plugin/migrate/cckfield/LinkField.php
@@ -2,6 +2,10 @@
 
 namespace Drupal\link\Plugin\migrate\cckfield;
 
+@trigger_error('LinkField is deprecated in Drupal 8.4.x and will be
+be removed before Drupal 9.0.x. Use \Drupal\link\Plugin\migrate\field\d7\FileField
+instead.', E_USER_DEPRECATED);
+
 use Drupal\migrate\Plugin\MigrationInterface;
 use Drupal\migrate_drupal\Plugin\migrate\cckfield\CckFieldPluginBase;
 
diff -u b/core/modules/link/src/Plugin/migrate/cckfield/d7/LinkField.php b/core/modules/link/src/Plugin/migrate/cckfield/d7/LinkField.php
--- b/core/modules/link/src/Plugin/migrate/cckfield/d7/LinkField.php
+++ b/core/modules/link/src/Plugin/migrate/cckfield/d7/LinkField.php
@@ -2,6 +2,10 @@
 
 namespace Drupal\link\Plugin\migrate\cckfield\d7;
 
+@trigger_error('LinkField is deprecated in Drupal 8.4.x and will be
+be removed before Drupal 9.0.x. Use \Drupal\link\Plugin\migrate\field\d6\FileField
+instead.', E_USER_DEPRECATED);
+
 use Drupal\link\Plugin\migrate\cckfield\LinkField as D6LinkField;
 use Drupal\migrate\Plugin\MigrationInterface;
 
diff -u b/core/modules/link/tests/src/Unit/Plugin/migrate/cckfield/d7/LinkCckTest.php b/core/modules/link/tests/src/Unit/Plugin/migrate/cckfield/d7/LinkCckTest.php
--- b/core/modules/link/tests/src/Unit/Plugin/migrate/cckfield/d7/LinkCckTest.php
+++ b/core/modules/link/tests/src/Unit/Plugin/migrate/cckfield/d7/LinkCckTest.php
@@ -47,7 +47,7 @@
    * @covers ::processFieldInstance
    */
   public function testProcessFieldInstance() {
-      $this->plugin->processFieldInstance($this->migration);
+    $this->plugin->processFieldInstance($this->migration);
 
     $expected = [
       'plugin' => 'static_map',
only in patch2:
unchanged:
--- a/core/modules/file/src/Plugin/migrate/cckfield/d6/FileField.php
+++ b/core/modules/file/src/Plugin/migrate/cckfield/d6/FileField.php
@@ -2,6 +2,10 @@
 
 namespace Drupal\file\Plugin\migrate\cckfield\d6;
 
+@trigger_error('FileField is deprecated in Drupal 8.4.x and will be
+be removed before Drupal 9.0.x. Use \Drupal\file\Plugin\migrate\field\d6\FileField
+instead.', E_USER_DEPRECATED);
+
 use Drupal\migrate\Plugin\MigrationInterface;
 use Drupal\migrate\Row;
 use Drupal\migrate_drupal\Plugin\migrate\cckfield\CckFieldPluginBase;
only in patch2:
unchanged:
--- a/core/modules/file/src/Plugin/migrate/cckfield/d7/FileField.php
+++ b/core/modules/file/src/Plugin/migrate/cckfield/d7/FileField.php
@@ -2,6 +2,10 @@
 
 namespace Drupal\file\Plugin\migrate\cckfield\d7;
 
+@trigger_error('FileField is deprecated in Drupal 8.4.x and will be
+be removed before Drupal 9.0.x. Use \Drupal\file\Plugin\migrate\field\d7\FileField
+instead.', E_USER_DEPRECATED);
+
 use Drupal\migrate\Plugin\MigrationInterface;
 use Drupal\migrate\Row;
 use Drupal\migrate_drupal\Plugin\migrate\cckfield\CckFieldPluginBase;
only in patch2:
unchanged:
--- a/core/modules/file/src/Plugin/migrate/cckfield/d7/ImageField.php
+++ b/core/modules/file/src/Plugin/migrate/cckfield/d7/ImageField.php
@@ -2,6 +2,10 @@
 
 namespace Drupal\file\Plugin\migrate\cckfield\d7;
 
+@trigger_error('ImageField is deprecated in Drupal 8.4.x and will be
+be removed before Drupal 9.0.x. Use \Drupal\file\Plugin\migrate\field\d7\ImageField
+instead.', E_USER_DEPRECATED);
+
 use Drupal\migrate\Plugin\MigrationInterface;
 use Drupal\migrate_drupal\Plugin\migrate\cckfield\CckFieldPluginBase;
 
only in patch2:
unchanged:
--- a/core/modules/taxonomy/src/Plugin/migrate/cckfield/TaxonomyTermReference.php
+++ b/core/modules/taxonomy/src/Plugin/migrate/cckfield/TaxonomyTermReference.php
@@ -2,6 +2,10 @@
 
 namespace Drupal\taxonomy\Plugin\migrate\cckfield;
 
+@trigger_error('TaxonomyTermReference is deprecated in Drupal 8.4.x and will be
+be removed before Drupal 9.0.x. Use \Drupal\taxonomy\Plugin\migrate\field\TaxonomyTermReference
+instead.', E_USER_DEPRECATED);
+
 use Drupal\migrate\Plugin\MigrationInterface;
 use Drupal\migrate_drupal\Plugin\migrate\cckfield\CckFieldPluginBase;
 
only in patch2:
unchanged:
--- a/core/modules/text/src/Plugin/migrate/cckfield/TextField.php
+++ b/core/modules/text/src/Plugin/migrate/cckfield/TextField.php
@@ -2,6 +2,10 @@
 
 namespace Drupal\text\Plugin\migrate\cckfield;
 
+@trigger_error('TextField is deprecated in Drupal 8.4.x and will be
+be removed before Drupal 9.0.x. Use \Drupal\text\Plugin\migrate\field\TextField
+instead.', E_USER_DEPRECATED);
+
 use Drupal\migrate\Plugin\MigrationInterface;
 use Drupal\migrate\Row;
 use Drupal\migrate_drupal\Plugin\migrate\cckfield\CckFieldPluginBase;