When you save to a pdf file, that file in not saved in the TurboTax software. If you r2020 state tax was rejected, you will have received an email with the reason for the rejection. You go back into TurboTax and fix the reason for the rejection and then refile. You do not amend.
When you print to a pdf, you need to save that pdf to a location on your computer, to a cloud drive, or to an external storage device, like a usb drive.
