Can I import sales invoices with separate shipping charges into Quick Books Online

Hello, @paul-william-col.

There are is specific format when you import the list of your invoices to QuickBooks Online. You can include the shipping charges on the invoice. 

Here's a sample CSV file as your reference:

You can read through this article for more detailed instructions: Import multiple invoices at once.

I am always here to help if you have other questions.