Welcome to the QuickBooks Community, userphotos. I will be happy to show you how to unmatch or move bank transactions after reviewing them. Here's how:
- Go to the Banking tab.
- Choose the blue tile to review the account.

- Click the Review tab.
- Locate the transaction and choose the blue transaction link in the Added or Matched column to view the linked/matched transaction.

- In the Action column, you can select Undo.
The transaction will then go back to the For Review tab, and then you can make the necessary adjustments.
If you prefer to undo an added bank transaction entirely and start over, use these steps below to accomplish this.
- Go to the Banking area.
- Click the blue tile for the account to be reviewed.
- Select the Reviewed tab and locate the transaction that needs to undo.

- Click Undo to remove the added record from your account.
- Once completed, go back to the For Review tab and make adjustments such as editing or categorizing.
For more information on how to edit matched or added transactions or categorize and match online bank transactions in QuickBooks Online for future reference, I recommend that you review these articles below.
Please let me know how this goes. If you need assistance, please don't hesitate to leave a comment below. My team and I will do our best to help you. Take care, and enjoy the rest of your day.