Neat!

This is a very simple but effective order exporter… More importantly, it’s the only reliable alternative I found to export orders with custom fields (see WC Fields Factory, a great plugin from the same author).

The only caveat would be it does not give any feedback when you click on Export button. It takes not less than 10 secs at my store to start downloading the file, so user can get a bit anxious while waiting (with no indication on the process going alright or not).