Hello tangerinecurry,
We cannot undo a reconciled period at once. However, we can undo the reconciled transactions one at a time. Here's how to do it:
- Select Accounting on the left menu and go to the Chart of Accounts tab.
- Select the affected account and click Account history.
- Select the transactions you want unreconcile.
- Click the reconciled status (R) until it is blank. This will remove the transaction from the reconciliation.
- Click Save and select Yes to confirm the action.
You can use this article for more information: Undo and remove transactions from reconciliations in QuickBooks Online.
You might also consider asking your accountant about this matter. They might be able to provide other options aside from undoing a reconciliation. They know what's best for you and your books.
We'll be right here if you need anything else. Have a great day!
