When using WooCommerce Order/Customer CSV Export, each order gets only exported once. After the initial export the order is marked as ‘already exported’ and thus skipped in subsequent exports. Sometimes you want to export all orders even when they have been exported prior.
Exporting all orders regardless of their order status when using WooCommerce Order/Customer CSV Export is possible using custom code.
Here is a snippet by Tamara Zuk.
Do not know how to use these snippets?
Here is my help article on using custom code snippets.
Oh, and do not forget to backup.