I just got through editing my listing. When I had my wife check if the edits were saved, we discovered that the listing can no longer be seen. I wonder if I did something wrong while I was editing it which caused the listing to disappear.
Get in touch with Airbnb. Just minutes ago I had to do the same (I used the email option throught the site) because something wrong was with my address (zip code changed and the site didn't respond to my edits). So maybe they will retrieve your listing.