We appreciate you for joining the thread, @Questionable.

I'm here to help you reconcile your account. Since your opening balance of the long-term liability account had been reconciled, you'll need to undo the reconciliation and correct the date and year. 

To undo reconciliation in batch, I'll recommend reaching out to your accountant to perform it. You can also manually undo the reconciliation.

Here's how:

1. Go to Bookkeeping or Accounting, then select Chart of accounts 
2. Find the account that has the reconciled transaction. Then select View register.
3. Find the transaction. If the transaction is reconciled, you’ll see an “R” in the checkmark ✔ column.
4. Select the transaction to expand the view.
5. In the checkmark ✔ column, select the box with the “R” until the box is blank. This removes the transaction from the reconciliation.
6. Select Save.
7. Close the account register.

Once done, we'll reconcile again your liability account with the correct year. You can follow the steps below.

1. Go to Accounting and select the Reconcile tab.
2. Select the bank account from the Account drop-down list,
3. Click the Start Reconciliation button.
4. From the upper right-hand corner, click Edit info.
   
5. Choose the correct reconciliation year date from there.
   
6. Tap in Save.

If you want to know the amount of your QuickBooks account matches your real-life bank and credit card statements, feel free to read this article: Learn the reconcile workflow in QuickBooks.

For additional questions about reconciliation, never hesitate to reply to this post. Keeps safe and have a good one!