You can add objects the tool map schema that you synchronized previously using the Map Environment window in the Schema Editor. This allows you to define an object in one authoring tool map schema, save it in the tool metadata database, and then copy that change to the other authoring tools using compare.
For some authoring tools, such as Smart Instrumentation, changes to the metadata in the tool database are made automatically when you add the object to the tool map schema. For other authoring tools, changes are only saved when you click File > Save > Tool Schema File command in the Schema Editor to save the tool map schema. This allows you to cancel your changes when you are adding new tool properties, enumerated lists, or enumerated entries before you save the tool map schema.