Deleted Invoice Still Shows On Customer Account

SOLVED

I deleted a customer's Service Invoice following this guide: Delete invoices, credit notes or sales orders (sage.com) I though it would ask me to give a reason why it was being deleted, but it didn't. However, the invoice is still showing on the Customer's account as outstanding even though I can no longer see it in Invoices & Credits. It still shows in the Customer's Activity and in Transactions. Am I supposed to do something else to remove it from their account?