Once a redirected is added the link is moved to another list.
Currently when you add a redirect the original 404 shows, even once its fixed. It would be good to view unfixed 404s in a separate list.
Good news! We’re now labeling fixed 404s. You can sort by fixed/not fixed. You will also see a progress meter on your dashboard. Note: it takes us a little while to check all 404s. It isn’t instant.
More info is here of how we're labeling each 404: http://aleksandrmedia.uservoice.com/knowledgebase/articles/422699-what-does-the-404-tracking-progress-bar-on-my-dash
This feature would be awsome. Please add it, it is very confusing as it is now. Thank you!