How do I void a lost check from a closed fiscal year in QuickBooks Online and unlink it from its original invoice so that I can link the newly issued check to that invoice?

To ensure I provide an accurate solution, are you referring to a bill you owe a vendor, or an invoice a customer owes you?

If you're dealing with a vendor bill, void the transaction in the current year. This keeps your closed-year books and historical reconciliations perfectly intact.

Here's how to do it:

1. Locate and open the original 2025 check in QuickBooks Online.
2. Click More at the bottom of the screen, then select Void.
3. When prompted by the system to choose a date, select the option to void it on the current date.

If your 2025 books are password-protected, you will be prompted to enter those credentials before proceeding. An admin must input the closing date password to authorize the void or temporarily adjust the settings.

Now, confirm the bill has reopened. Then, link your newly issued check to it by following these steps:

1. Go to + New, then Pay Bills.
2. Select the open bill, and apply your new check to it.
3. Click Save and close. The transaction will now correctly show as paid by your new check.

If you are replacing a lost check that a customer used to pay an invoice, void it in 2026. QuickBooks will automatically unlink it from the entry, and the status will change to unpaid.

From there, you can apply the new check to the invoice.

Additionally, please be aware that during your next reconciliation, you will see the voided transaction as uncleared. Mark it as cleared, and your reconciled balance will remain intact.

This thread will stay open for any additional questions. We're always here to help. 

The thing is that in 2025 a check was lost but it was linked to the corresponding bill and the transaction was reconciled before closing the fiscal year.

In 2026, we confirmed that the check never reached its destination. We now in 2026 have issued a new check . However, the original bill is still linked to the lost check. How can I resolve this issue and link the new check to the bill registered in 2025 (already closed fiscal year) so that it once again appears as paid with the new check?
In addition, I cannot use the administrator advantages of our company’s account: Is there any way to proceed without the account password???