Maybe I should clarify. A RS report specification (XML) can be migrated back and forth between Cognos 8.4.2 and Cognos Express, and yes I've done it as I flip back and forth between doing Express and Cognos 8 demos. As for packages and other content store items, I don't think the migration is as smooth backwards to Express given the architecture changes. Let me know what issues your friend ran into, it would be great to know where issues may arise in the future. Thanks MFGF!