Alexandra,
Thanks for your response.
I tried this again and it’s still pulling in the same details as before to CSV: just the six columns showing Order, Customer, Products, Total, Shipped, Order Date.
Just to clarify: we are talking about class-wcvendors-pro-export-helper.php?
If it’s not too much trouble, would you mind posting the whole file so I can just copy and paste it all in one go?