Hey there AG$, thanks for your question! We created a guide for this, Click Here to read!

To create an export for a customer, navigate to Sales>Billing & Invoicing. 

Type your customer's name in the search bar, and apply filters as necessary. To include all invoices, include Paid, Due, Not Yet Due, and Overdue. 

Then, click the Export button in the top right. This next step is very important, make sure you set your Rows to Filtered, as this applies your current filter to the export. Then, download your report, and it will contain a full invoice history for this client. 

Thanks and let us know if you run into anything else!