Hi there, @mmillcutility.
Thank you for posting here in the Community. I'm here to help guide you to the right support who can help you with deleting/voiding paychecks successfully.
In QuickBooks Online (QBO), we can only delete/void paychecks from the previous quarter to present. Since the transaction was dated way back 6 months ago, I suggest contacting our Payroll Support Team to help you with deleting/voiding the paycheck.
Our support has the chance to pull up your account via a secured remote access and will be able to help you delete/void the paycheck. For the support's contact information and open hours, you can check it here: https://payroll.intuit.com/support/contact/?infosrc=qs&service=16&infosrc=qs.
For additional reference about deleting or voiding paychecks, you may check this article: Delete or void paychecks.
That should get you in touch with our payroll support. Let me know if you have any other concerns about voiding/deleting paychecks. I'm always here to help you!