I can't believe this, but after 2 years I finally figured this out. You have to right click on the video and copy the url. Put it in a new page on your browser and then the video will show up with all the details. You can then link or unlink it to different profiles.
Indeed. If you click on the idea (shown above) you go to the video's page and there are links below it where you can report this problem and get it changed. Glad you found out how. Sorry it took you so long.