Is there a way to match an invoice to a reconciled transaction from months ago?

Hi MPOCS,

At the moment we're unable to match reconciled transactions in QuickBooks Online. If the transaction has been reconciled, you'll have to Exclude the downloaded transaction in QBO.

As long as the transaction has the same amount and date you can manually undo the reconciliation by removing the R in the bank register, and then match the transaction.

1. Click on the Transactions and select Chart of accounts.
2. Locate the account holding the transaction, and select Account history.
3. Select the transaction you want to unreconcile.
4. Review the check column. If the transaction is reconciled, you’ll see an R.
5. Keep selecting it until the box is blank. This removes the transaction from the reconciliation.
6. Select Save.

Once you've undo the reconciliation, you can match them to the download bank feeds. If you made an adjustment to a past reconciliation or still have problems with your reconciliation, reach out to your accountant. 

You can check this link to learn more about: Undo or remove transactions from reconciliations in QuickBooks Online.

Feel free to post again in the Community if you have any QuickBooks concerns. I am around to help you.