Yes, you can manually export sales orders to a supplier.
1. Navigate to Orders > Order Management > Paid-Ready to Ship
2. Click the checkbox next to the specific order(s) you would like to export
3. Click the blue 'Export Orders' button on the top of the screen. Select 'Export Manual'
4. Select the warehouse you want to export the sales order to and click 'Export'.
5. Navigate to Orders > History > Exported File History to access the file to forward to your supplier manually.