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
3. Click the blue "Export Warehouse Data" button on the top of the screen
4. Select the warehouse you want to export the sales order to and click "Export"
5. Navigate to Orders > Shipping Management > Dropship Management to access the file to forward to your supplier manually.