[xwiki-users] Migrate to Filesystem Storage Issues

Hello, I tried to get the Filesystem attachments to work. Unfortunately, after setting the appropriate config parameters in xwiki.conf and restarting tomcat, all attachments stored in the database are not accessible any more. Therefore I tried to use the Filesystem Attachment Porter(http://extensions.xwiki.org/xwiki/bin/view/Extension/Filesystem+Attachment+P...). The importer complains that there are no files to import, though. Am I missing a step here? Thank you for your help, Stephanie