Hi, there @Est90inc. I'm here to help you with your banking concern.
When opening a new bank account in QuickBooks Desktop, you can transfer any remaining funds using the banking menu's transfer fund option.
On the other hand, if you use the old account for direct deposit for your payroll, you can update your bank in payroll services.
See this article for more details: Change your payroll bank account
I also found these handy articles you can read more about managing reconciliation in QuickBooks Desktop:
Please feel free to leave a reply on this thread if there's anything else you need in QuickBooks Desktop. I'll be around to help you out again. Have a good day ahead.