Currently, this importer is very limited on the data that can be imported. i.e. on columns you can only import: Name, Datatype, Length and Description. All the Model, Table and Column properties should be available to import. Nullability, Cardinality, Precision, Comments, etc.

Also, change name to "Metadata from Flat or Text File" to distinguish it from "Metadata from Teiid Metadata File"