If the site has syndicated content which relies on the config, trying to use config via config split or other means that doesn't have the required config will likely break.
- Acquia Content Hub - 8.x-2.x
There are two options to resolve this:
- Update the config split to include the missing config so it matches the new data model needed for the syndicated entities.
- Follow this ticket on drupal.org that introduces code to syndicate only content entities (not config entities) while logging the differences in config. https://www.drupal.org/project/acquia_contenthub/issues/3083430
Note: the second option will still require manually updating the config, for now, as the code still needs to be produced, reviewed and tested.