Clearing default custom title

Hi all, I created a sales invoice and added a custom title using the checkbox on the invoice screen. I used it once a year ago and it still populates on every new invoice I create. I’ve tried deleting the custom title from the invoice and saving, deleting the custom title from the one invoice I used it for, and digging through the settings to find where it might be saved.

I would like to have no custom title as the default. Does anyone have ideas on how to fix this?

Thanks!

Go to Sales Invoice Tab and at the end of the page click Form Defaults. Clear custom title and save.

thank you!