define('WP_MEMORY_LIMIT', '512M');
Change Log – WordPress Import Export - Plugins - VJinfotech vj-wp-import-export.3.9.27.zip
The plugin is known for its "all-in-one" approach to data management, providing features that automate and simplify complex migrations: Broad Content Support vj-wp-import-export.3.9.27.zip
Using the default WordPress Exporter, I would have lost the relationships between courses and lessons. Using a database dump via phpMyAdmin would require complex serialized data repair. vj-wp-import-export.3.9.27.zip