Not all changes and fixes are retroactively possible. Sometimes, they can be prevented, but not fixed once they've occurred. In this case, try reloading a save to a point before that mission was active in your journal, then try it again.
If it still won't progress at that point, it may be that there's a lingering issue. I'd send it in to CDPR Tech Support, at that point:
support.cdprojektred.com
Please, read the appropriate FAQ section for the platform you're playing on, ensuring all suggestions have been followed. If the problems persist, you can use the "Contact Us" link to send in a ticket.
Be sure to include your system (including specs if on PC), a brief description of the issue, and the steps taken to reproduce it (if applicable).
If it still won't progress at that point, it may be that there's a lingering issue. I'd send it in to CDPR Tech Support, at that point:
Technical Support — CD PROJEKT RED
Welcome to CD PROJEKT RED Technical Support! Here you will find help regarding our games and services, as well as answers to frequently asked questions.
support.cdprojektred.com
Please, read the appropriate FAQ section for the platform you're playing on, ensuring all suggestions have been followed. If the problems persist, you can use the "Contact Us" link to send in a ticket.
Be sure to include your system (including specs if on PC), a brief description of the issue, and the steps taken to reproduce it (if applicable).