Invoice import/export

Invoices management should be happening in NetSuite, but the initial invoice is pushed to NetSuite in case you make use of an authorize & capture payment method in Magento, or create an invoice using any other mean.

At NetSuite->Settings->Order Settings->Netsuite equivalent for a Magento invoice, you can choose whether the invoice is pushed to NetSuite as a cash sale or as an invoice.

Any invoice/cash sale created in NetSuite on a sales order that originated from Magento will be sent to Magento.