When using UIDocumentBrowserViewController in conjunction with a 'file' created by UIManagedDocument, the 'file' is seen by UIDocumentBrowserViewController as what it really is: a folder. Tapping on the folder shows a subfolder named 'StoreContent', which in turn shows the CoreData generated files ('persistentStore', 'persistenStore.shm' and 'persistentStore.wal'). These are grayed out, and also show the icon of another app.
How would one go about using UIManagedDocument in conjunction with UIDocumentBrowserViewController?
I filed a bug for this on July 30, but this one was ignored so far.