My L4D Survival map no longer works after yesterday's update

I updated the map a bit today, but only brushwork. I didn’t change my entities at all, and now when I start the map, it’s no longer Survival mode. It worked perfectly fine before… Any help?

Do in console:
map <mapname> survival

I think the update broke some things. Me and some friends downloaded a custom campaign (the zelda one) and played it before the update just fine, and now when we tried to play it after the crash course update it crashes the game with an entity error.

What about if I release the map? and why should I have to do that now when I never had to do it in the past

You have to do that now because that was a feature of the latest update.

They just fixed it I think.