When you attach a schema file to a schema asset, it is possible to change the entire graph of imported/included schema files. In this case, you can select the Interactive resolution of Import/Includes option. Then for each imported/included schema asset, a modified schema file can be attached, or a new version can be created or the current schema asset can just be reused. If you reuse a schema asset, then all of its dependent schema assets can be reused as well.
Example: Create a new version of a complete schema graph (illustrated with XML Schema objects):