Fix/change the date in an already reconciled month in Quickbooks online

Hi there, 

Welcome to the Community. QuickBooks is designed to help you save time so you can do the things that you enjoy the most. I'll be glad to share more information about reconciling your accounts. 

Based on what you've shared, I recommend getting in touch with an accounting professional for expert advice on how to handle the transactions. If you're not in contact with a professional, don't worry, you can search for one using this link here. Otherwise, I recommend you to check out these helpful resources with more info about reconciling in QuickBooks:

• Reconcile hub
• Fix issues for accounts you've reconciled

I encourage you to go through the articles above as they provide helpful information which will help you complete your reconciliation with ease. If you have questions, don't hesitate to reach back to me here. Otherwise, I wish you a great rest of the week.