If you want to add or remove the shipping charge (also known as 'handling') from an order that has been checked out (closed), you do the following.
1. go the invoice report
2. find your invoice
3. click the link for the invoice number (this will display the invoice)
4. click the link for 'edit header'
5. scroll to the 'handling' field and add or remove a value in dollars
This is where it gets tricky...
6. There are two buttons at the top of the screen. Click the button labeled 'Save w/o freight update'. This tells Sophio NOT to go back to the UPS or DHL or USPS server and get freight quotes and to use what you entered directly. It will also ignore your own shipping rules (free freight at a certain order size for example)
That's it!
