Can I still play the official "Left 2 Die" scenario in SC2? If yes, how? [duplicate]
I reported a bug and received the following response from Blizard:
There's a known issue where the arcade's general search function does not return a complete list of results so that may be why you you are not finding it. Like aYeDeeKay mentioned, try looking for it on the Top Rated/Played lists instead.
It looks like the issue I was facing was resolved in a recent patch.