--- /dev/null
+<?php
+
+/**
+ * @file
+ * Contains install and update functions for Migrate.
+ */
+
+/**
+ * Remove load plugin references from existing migrations.
+ */
+function migrate_update_8001() {
+ $config_factory = \Drupal::configFactory();
+ foreach ($config_factory->listAll('migrate.migration.') as $migration_config_name) {
+ $migration = $config_factory->getEditable($migration_config_name);
+ $migration->clear('load');
+ $migration->save(TRUE);
+ }
+}