You can undo one transaction at a time in QuickBooks Online (QBO), @camerons1.
 
To begin with, please proceed to these steps:
 
- Go to the Accounting tab, then choose Chart of Accounts.
- Find the account and select View register.
- Filter the register to show only the last 60 days of transactions for easier review.
- Look for the “R” in the check column for reconciled transactions.
- Click the box until it’s blank to remove it from reconciliation.
 
 
      
 
 
 
 
 
 
       
       6.     Once done, hit Save.
 
If you want to undo an entire reconciliation, I recommend reaching out to your accountant with a QBO Accountant account.
 
Feel free to click the Reply button if you have any additional concerns.