Thanks for your reply. My plugin is already set like in your picture, and it works fine, but that’s not the problem.
Even if the transaction is sent to quickbooks “when order is set to complete” (let’s say the 5th of october), the date billing date still will be the day the order has been made by the client (let’s say the 1rst of october, 5 days prior).
I need the biling date sent to quickbooks to be the day the order is completed, not the day the order has been made.