diff --git a/core/modules/migrate/src/Entity/Migration.php b/core/modules/migrate/src/Entity/Migration.php
index ba563f1..3357205 100644
--- a/core/modules/migrate/src/Entity/Migration.php
+++ b/core/modules/migrate/src/Entity/Migration.php
@@ -406,6 +406,13 @@ public function setProcess(array $process) {
   /**
    * {@inheritdoc}
    */
+  public function setProcessOfProperty($field_name, $process) {
+    $this->process[$field_name] = $process;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
   public function getSystemOfRecord() {
     return $this->systemOfRecord;
   }
diff --git a/core/modules/migrate/src/Entity/MigrationInterface.php b/core/modules/migrate/src/Entity/MigrationInterface.php
index 09cc770..76851ac 100644
--- a/core/modules/migrate/src/Entity/MigrationInterface.php
+++ b/core/modules/migrate/src/Entity/MigrationInterface.php
@@ -198,6 +198,18 @@ public function getProcess();
   public function setProcess(array $process);
 
   /**
+   * Set the process for an individual destination field.
+   *
+   * @param string $field_name
+   *   The field name of which to set the process.
+   * @param $process
+   *   An array of process data.
+   *
+   * @see Drupal\migrate_drupal\Plugin\migrate\load\LoadEntity::processLinkField().
+   */
+  public function setProcessOfProperty($field_name, $process);
+
+  /**
    * Get the current system of record of the migration.
    *
    * @return string
diff --git a/core/modules/migrate_drupal/src/Plugin/migrate/load/LoadEntity.php b/core/modules/migrate_drupal/src/Plugin/migrate/load/LoadEntity.php
index ea7f75e..73c8519 100644
--- a/core/modules/migrate_drupal/src/Plugin/migrate/load/LoadEntity.php
+++ b/core/modules/migrate_drupal/src/Plugin/migrate/load/LoadEntity.php
@@ -132,9 +132,7 @@ public function loadMultiple(EntityStorageInterface $storage, array $sub_ids = N
                 $this->processTextField($field_name, $data, $migration);
                 break;
               default:
-                $process = $migration->getProcess();
-                $process[$field_name] = $field_name;
-                $migration->setProcess($process);
+                $migration->setProcessOfProperty($field_name, $field_name);
             }
           }
         }
@@ -168,12 +166,10 @@ protected function processTextField($field_name, $field_data, MigrationInterface
     $value_key = $field_data['db_storage'] ? $field_name : "$field_name/value";
     $format_key = $field_data['db_storage'] ? $field_name . '_format' : "$field_name/format" ;
 
-    $process = $migration->getProcess();
-
-    $process["$field_name/value"] = $value_key;
+    $migration->setProcessOfProperty("$field_name/value", $value_key);
     // See d6_user, signature_format for an example of the YAML that
     // represents this process array.
-    $process["$field_name/format"] = [
+    $process = [
       [
         'plugin' => 'static_map',
         'bypass' => TRUE,
@@ -188,7 +184,7 @@ protected function processTextField($field_name, $field_data, MigrationInterface
       ],
     ];
 
-    $migration->setProcess($process);
+    $migration->setProcessOfProperty("$field_name/format", $process);
   }
 
   /**
@@ -202,8 +198,7 @@ protected function processTextField($field_name, $field_data, MigrationInterface
    *   The migration entity.
    */
   protected function processFileField($field_name, $field_data, MigrationInterface $migration) {
-    $process = $migration->getProcess();
-    $process[$field_name] = [
+    $process = [
       'plugin' => 'd6_cck_file',
       'source' => [
         $field_name,
@@ -211,7 +206,7 @@ protected function processFileField($field_name, $field_data, MigrationInterface
         $field_name . '_data',
       ],
     ];
-    $migration->setProcess($process);
+    $migration->setProcessOfProperty($field_name, $process);
   }
 
   /**
@@ -227,8 +222,7 @@ protected function processFileField($field_name, $field_data, MigrationInterface
   protected function processLinkField($field_name, $field_data, MigrationInterface $migration) {
     // Specifically process the link field until core is fixed.
     // @see https://www.drupal.org/node/2235457
-    $process = $migration->getProcess();
-    $process[$field_name] = [
+    $process = [
       'plugin' => 'd6_cck_link',
       'source' => [
         $field_name,
@@ -236,7 +230,7 @@ protected function processLinkField($field_name, $field_data, MigrationInterface
         $field_name . '_attributes',
       ],
     ];
-    $migration->setProcess($process);
+    $migration->setProcessOfProperty($field_name, $process);
   }
 
   /**