The latest update to CS:GO included several changes to the way the config files are handled.

From the changelog:

- Game modes configuration file now specifies cfg files to exec instead of keyvalue pairs of convars to make it easier for server operators to configure their game modes. To tweak game modes it would be sufficient to provide gamemode_competitive_server.cfg and _server.cfg files for other game modes which will exec after stock cfg files.

We're currently in the process of validating all CS:GO profile which will automatically update your profile to the new format and add the new files.

If you've made changes to "convars" in your profile you'll need to redo these changes in the relevant _server.cfg file.