Thanks for getting back with the Community, thomas3762.

You can correct invalid dates on previous reconciliations by undoing them.

Here's how:

1. In your top menu bar, go to Banking.
2. Choose Reconcile.
3. From the Begin Reconciliation window, select Undo Last Reconciliation.

Now your previous reconciliation will be undone and need to be reconciled again. If you need to undo more than one reconciliation, you can repeat the numeric steps above to undo one at a time in the order they were originally done in.

When undoing prior reconciliations, it's recommended that you work with an accounting professional. If you're in need of one, there's an awesome tool on our website called Find a ProAdvisor. All ProAdvisors listed there are QuickBooks-certified and able to provide helpful insights for driving your business's success.

Here's how it works:

1. Go to our Find a ProAdvisor page.
2. Use the City or ZIP search field to specify a location.
3. Select Find a ProAdvisor.
4. Browse through your results and find one that works best for the business. You can click on each ProAdvisor's profile to learn more information about them.
   

Once you've found an accountant, they can be contacted through their Send a message form:

1. Use the available text box to introduce yourself. Be sure to include details about which services you're looking for.
   
2. Enter your appropriate info in the Your name, Your email, and Your phone number (optional) fields.
   
3. Hit Send message.
   

You'll also be able to find many detailed resources about using QuickBooks in our help article archives.

I'll be here to help if there's any additional questions. Have a wonderful day!