Hello there, pmitchell1.

We'll need to open the original estimate you've made to create an invoice for 50%. Here's how:

1. Open the estimate
2. Click the Create Invoice button at the upper-right corner.
3. Select 50%. Then, Create invoice.
4. Click Save and Close.
   

Then, when recording the invoice payment, deposit it to Undeposited Funds account. It holds customer payments in QuickBooks until you deposit them at your bank. Once done, you can record the payment in the Bank deposit section to your real bank account. Here's how:

1. Click the Receive payment button.
2. Hit the Deposit to drop-down arrow and select Undeposited Funds.
3. Make sure to add a check-mark to the correct invoice.
4. Then, Save and Close.
   
5. Go to Bank deposit.
6. Select an account, find the name of your customer to deposit their payment. 
7. Put a check-mark on it and Save.
   

Then, you can double-check the amount you've recorded in your bank in the Chart of Accounts (COA). Also, you can check this article for more details about the progress invoicing, and how you can import your form styles for your invoices and estimates in QBO:

• Progress invoicing.
• Import custom form styles for invoices or estimates. 

Let me know if you have other questions. I'm always around to assist you further. Take care always!