Editing already paid invoice

I'm here to provide the solution on how to add an existing invoice to a project, Crodrigue.

You can add the paid invoice to invoice to a project. Then, reconnect the payment so it's mark as paid again and link to the correct invoice.

Before editing the paid invoice, make sure the Automatically apply credits setting is turned off. Here's how:

1. Go to Settings ⚙, then Account and settings.
2. Select the Advanced tab.
3. Scroll to the Automation section and select the pencil ✎ icon it to expand it.
4. Turn off the Automatically apply credits setting.
5. Select Save.

After turning off the auto-apply credits, please follow these steps:

Step 1: Add the paid invoice to the project

1. Go to the Sales tab.
2. Select the Invoices tab.
3. Find and select the paid invoice you want to add to a project.
4. Select Edit invoice.
5. Select the Customer ▼ drop-down, then select the project. 
6. Click Save.
   
   

Step 2: Reconnect the payment to the invoice

1. Go to Settings ⚙, select Chart of Accounts.
2. Find the account where the payment was deposited and select View register.
3. Find and select the payment for the invoice, then select Edit.
4. In Outstanding Transactions, select the invoice checkbox that the payment applies to.
5. Click Save and close.
   
   

Learn more about managing projects through this link: Set up and create projects in QuickBooks Online.

Stay in touch with me if there are other things you need to manage in QuickBooks. I'm always right here to help you.

Thank you, but when I edit the invoice and change the customer it clears out everything including the balance.