Issue #2394571 by benjy: Filter formats on cck text fields are not looked up in the idMap

core/modules/migrate_drupal/src/Plugin/migrate/load/LoadEntity.php

@@ -111,6 +111,26 @@ public function loadMultiple(EntityStorageInterface $storage, array $sub_ids = N
                 ],
               ];
             }
+            elseif ($data['type'] === 'text') {
+              $migration->process[$field_name . '/value'] = $field_name . '/value';
+              // See d6_user, signature_format for an example of the YAML that
+              // represents this process array.
+              $migration->process[$field_name . '/format'] = [
+                [
+                  'plugin' => 'static_map',
+                  'bypass' => TRUE,
+                  'source' => $field_name . '/format',
+                  'map' => [0 => NULL]
+                ],
+                ['plugin' => 'skip_process_on_empty'],
+                [
+                  'plugin' => 'migration',
+                  'migration' => 'd6_filter_format',
+                  'source' => $field_name . '/format',
+                  'no_stub' => 1,
+                ],
+              ];
+            }
             else {
               $migration->process[$field_name] = $field_name;
             }

core/modules/migrate_drupal/src/Plugin/migrate/source/d6/CckFieldValues.php

@@ -268,7 +268,7 @@ public function fields() {
   public function fieldData() {
     $field_info = $this->getSourceFieldInfo($this->configuration['bundle']);
     $field_info['nid'] = ['type' => 'number'];
-    $field_info['type'] = ['type' => 'text'];
+    $field_info['type'] = ['type' => 'varchar'];
     return $field_info;
   }
 

core/modules/migrate_drupal/src/Tests/d6/MigrateCckFieldValuesTest.php

@@ -167,7 +167,7 @@ protected function setUp() {
   public function testCckFields() {
     $node = Node::load(1);
     $this->assertEqual($node->field_test->value, 'This is a shared text field', "Shared field storage field is correct.");
-    $this->assertEqual($node->field_test->format, 1, "Shared field storage field with multiple columns is correct.");
+    $this->assertEqual($node->field_test->format, 'filtered_html');
     $this->assertEqual($node->field_test_two->value, 10, 'Multi field storage field is correct');
     $this->assertEqual($node->field_test_two[1]->value, 20, 'Multi field second value is correct.');
     $this->assertEqual($node->field_test_three->value, '42.42', 'Single field second value is correct.');