update Reconciliation report

Thank you for letting us know, Rae123.

Let me share some insights about reconciliation process in QuickBooks Online.

Once you deleted a reconciled transaction it should also update the reconciliation report like the balances. However, this may create some discrepancies that can unbalance your accounts. 

If you really need to make sure everything is accurate, I recommend working with an accountant who uses QuickBooks Online Accountant. They're the only one that has the feature to undo their entire reconciliation and get you back on track.

Here's an article that you can use as a reference: Undo or remove transactions from reconciliations in QuickBooks Online.

I've also added this link to help you fix issues at the end of a reconciliation in QuickBooks Online.

Let me know if you mean something else or you have other concerns about reconciliation. I'd happy to help. Have a nice day!