correcting a reconciled Bill Payment check

It's nice to see you here in the Community, @kathy303. 

Let's undo the reconciled payment so you'll be able to reapply it to the correct credit card account. 

Though you've already located the discrepancy of your previous reconciliation, I'd first suggest running any of these reports to serve as your future reference. 

• Reconcile Discrepancy report
• Audit Trail report
• Previous Reconciliation Report

Then, you'll need to create a backup of your company file since undoing a previous reconciliation is irreversible. Here's how to undo it: 

1. Go to the Banking menu at the top.
2. Select Reconcile.
3. In the Begin Reconciliation window, select the account and statement date. 
4. Choose Undo Last Reconciliation.
5. When prompted, select Continue then OK.
6. Close and reopen the Begin Reconciliation window.

Once you're done, you'll have to reclassify the payment from the loan to the correct credit card account. 

After that, you'll need to unreconcile each month until you'll get the one where the reconciled transaction is.

For more information about fixing reconciliation discrepancies, you can check out these helpful articles: 

• Zero or Incorrect Beginning Balance in the Begin Reconciliation Window
• Fix Reconciliation Discrepancies

The steps and resources above will help achieve your reconciliation goal, @kathy303. 

I'll be around to help if you need further assistance. Have an awesome day.