How To Add an Entity to CloudKit using Core Data

I am using Core Data with CloudKit and I realized that a Core Data Entity was not saved and therefore that did not show up in the CloudKit Schema. I am running my app in the Development environment and saving the entity, but it's not showing up in the Schema. How do I get CloudKit to see this in the Schema and do I need to use the Development environment? If so, if I deploy to production, will that mess up my other entities in the schema?