Individuals lost upon import of OWL/RDF

[Ivan Filippenko]

I have a compliant .owl file exported from an ontology built in Protege. I'm trying to recreate the ontology in Sparx EA, without information loss. This file contains descriptions of both classes and individuals (instances) belonging to those classes. When I import the file into Sparx EA using Extensions -> ODM -> Import OWL/RDF, the classes and properties make it over, but the individuals don't; they seem simply to be ignored, unless I'm missing something. The individual elements in the .owl file look like:

<owl:NamedIndividual rdf:about="&pc;course34">
        <rdf:type rdf:resource="&pc;Course"/>
        <courseTitle>Modeling Data with OWL</courseTitle>
 </owl:NamedIndividual>

Is this the expected behavior?  Why aren't individuals reconstructed by the import?  Advice would be greatly appreciated.  Thank you!