Extending the Rhapsody CSV Importer
The Rhapsody CSV Importer is a quick and easy way to import CSV data into the model - but it is based on table layouts and therefore limited to the columns that you can display in such layouts.
However, there is an undocumented feature !
You can have the CSV Importer call your own java plugin function during the import - allowing you to extend the capability and import things you would not otherwise be able to do.
See here: Extending the Rhapsody CSV Importer