Hello,
Thanks for being a member of the QuickBooks family. QuickBooks Online offers a solid projects management feature where you can easily create new projects and manage your business more efficiently. At the moment, moving an already paid invoice to a project is not an integrated feature of the system. Doing so will reopen the invoice and remove the previously applied payment.
If you wish to move an invoice to a project, follow these steps:
- Select Sales from the left menu
- Select the Invoices tab
- Select the invoice you wish to move
- Under Customer, select the Project from the drop down menu
- Select Save and close from the bottom menu
Once the invoice is moved over, you can reapply the payment accordingly.
Check these community articles for more details about:
How to set up and use the Projects feature
Record a payment for an invoice
Let me know if you have any other questions.
