Hi there, @llm050.

I can help walk you through the steps of how to fix the check that is deposited to the wrong account in QuickBooks Online (QBO).  

Let's go to the view register to edit the check you've previously deposited. 

Here's how: 

1. Choose the Accounting tab, then pick Chart of Accounts. 
2. Locate the business account, then hit View register. 
3. Click the check and tap Edit. 
4. In the Account drop-down, select the personal account. 
5. Hit Save and close. 

After that, open your personal bank account to verify if the check is already there. 

You can also check these great resources that can help you with managing your COA, deposits, bank feeds, and other relevant topics. 

• Understand the chart of accounts 
• Banking

Let me know if you have more questions. I'm always here anytime you need help. Take care!