I am in exactly the same situation.
Updated folios are displayed when testing in the content viewer
Export from the folio producer
import the updated file into the "manage" view of the viewer builder
drag into itunes - content of the app remains as previous - no update
how do i test this to upload to the store - im happy with it in content viewer!
please help - im on a deadline!
and i feel like an idiot!
In the Folio Producer, near the export button, there is a button marked "UPDATE" press this and your folios will be updated!
follow the rest of the steps and the update appears!
Posted this just in case there isanyone else out there who cant see the "UPDATE" button!!!!!!