You'll have to enable the progress invoicing feature from your company's settings, Sgray.
Before recording any transactions in your account, please modify this option to ensure the required invoice amounts are reflected in your reports. Thus, I recommend deleting any previously created entries to reset the reporting data for that specific project.
Then, go to the Gear icon and select Accounts and Settings. From the Sales tab, activate the Progress Invoicing option and Save.

Once done, recreate the estimate from your projects and convert it to an invoice. You can refer to these steps for additional guidance:
- In your QuickBooks Online account, go to Projects and select the specific project.
- Under the Transactions tab, click the Add to Project dropdown and choose Estimate.
- Enter all information, then Save and Close.
- From the Projects page, select the Convert to Invoice option on the specific estimate recorded.
- Then, choose either Percentage/amount or Manual entry for each line option to enter progress invoicing.
- Verify all details entered into the invoice and click Save and Close.

In your Estimate & Progress Invoice by Customer report, the Invoiced amount column should reflect the specific amount entered.

With this, here's how you can track and enter customer-paid invoices to ensure the accuracy of your accounts: Record invoice payments.
Feel free to get back to us for any additional queries.