Is There a Difference Between Qualia and Ontology?

Question from stephen cenetts chene: Why should we eliminate quallia and preserve physical objects when we can simply eliminate everything from our ontology? Seems like physical objects don't fare much better in terms of our ability to justify their existence. And so i guess the thought might be, you know, if you think a seems to be consciousness, maybe there isn't. why is a difference with the seeming to be an external world? You can eliminate pretty much anything from yorntology if you really want to.