Hi, Brady.

Help has arrived! I know how important to track transactions with the appropriate customer or jobs. I'm here to help ensure you can save your changes.

The sub-customer "opening balance as of" date won't prevent you from entering transactions before the date. I've tried your steps, and I see it's changed. Let me share some troubleshooting you can perform to isolate the issue.

First, let's try accessing your account through an incognito window to rule out the possibility of a webpage issue. You can refer to these shortcut keys to open an incognito window in all supported browsers:

• Chrome: Ctrl+Shift+N
• Firefox: Ctrl+Shift+P
• Safari: Command+Shift+N

After logging in to your account, edit your deposit and select the sub-customer. If it saves the information, you may have accumulated too much historical data in your browser. I'd recommend clearing its cache so you can access QuickBooks with a clean slate. Alternatively, you can use a different supported browser.

Additionally, I'll show you how to modify the "opening balance as" date for customers. It only takes a few steps. 

Here's how:

1. Go to the Sales menu and then Customers.
2. Click the customer's name.
3. Under Transaction List, look for the invoice that has the "Opening Balance" memo.
   
4. Click the transaction to open it.
5. Alter the date and select Save and close.

Try these instructions and let me know the result. Also, please don't hesitate to reach back out to us if you need more help  managing your transactions. It's our pleasure to assist. Take care always!