After reconciling a credit card statement, I went in and changed a few expense accounts, not the amount. Now my reconciliation is off.

It's a pleasure to have you here today, @TerryS54.

When modifying reconciled transactions on the bank register page, ensure the R reflects below the checkmark column. R means reconciled, C means cleared, while the blank removes the transactions from the reconciliation. We'll write down the steps to address this situation and fix the reconciliation.

1. Access your QuickBooks Online company.
2. On the left navigational bar, go to the Transactions tab.
3. Select Chart of accounts.
4. Locate the bank and below the Action column, click View register.
5. Select the transaction you edited and then in the column, click the box until it shows R.
6. Once done, select Save button.

Moreover, you can check this article to help in case you encounter issues after reconciling an account inside the program: Fix issues at the end of a reconciliation in QuickBooks Online.

Should you have follow-up questions about fixing a reconciliation or handling reconciled transactions inside QuickBooks? Feel free to comment below so we can respond as soon as possible. Have a good one.