To migrate a model, you export the model from the source Metadata Manager repository to an XML file. You then import the XML file into the target Metadata Manager repository.

The model export XML file contains all the classes, attributes, and relationships for the model. When you import a model, Metadata Manager analyzes the contents of the XML file and compares it to the existing models. If the model does not exist, Metadata Manager creates the model. If the model exists, Metadata Manager imports the new or changed classes and relationships.

For example, you export a custom model from the development environment and then import it into the production environment. If you add a class to the custom model in the development environment, export it, and re-import it into the production environment, Metadata Manager imports the class that you added.