WooCommerce Order Export -custom meta

Hi guys,
I’m using WooCommerce Order Export and I want to export a custom XML file.
I modified the custom export format on the plugin’s setting.
When I add the “Orderlineitems” tag in custom format page I receive all order detail such as total tax and refund but I just want the meta column.
Here is a capture from the XML file
Also, each order is duplicated in XML file and I don’t need that too

http://www.zarbaftejam.com/wp-content/uploads/capture-1.jpg
http://www.zarbaftejam.com/wp-content/uploads/capture-2.jpg

Thanks in advance