Hi
I assumed you installed the cubes from business content? You might have overwritten all changed infoobjects that were originally from content. Now if you set them to overwrite all objects went back to its business content delivered state. There is no way of reverting those object to the customer changed object within the system. You have to ask SAP basis to do a rollback of the db before you installed the business content to get back to the original state.
When you install the business content again make sure you don't set changed objects back to their original state.
hope that calrifies
Martin