Agile->Publish to PPM button doesn't return anythign on Microsoft project

 Hi, We are using Agile 9.3. I'm tryign to import an existign project plan in microsoft into Agile. We are using the Microsoft project 2007, so saved the file in 2000-2003 version and tried to select Agile->publish to PPM button on the Microsoft menu, but it doesn't return anything. I've also tried to save the file in .xml and import it into PPM, but after selectign the file it returns an error "The XML file does not correspond to the activity " . Can someone please help me importing the existing project plans into PPM?

Thanks,

Usha