I would set aside your last database backup in case you notice problems with the imported data.
Due to the issues we had earlier with upgrading your site, some pages were imported twice.
Go to AdminCP > VaultWiki > Admin Panel > Integrity > URL Conflicts. Try to resolve each one.
For types of "Page,Area", only delete areas that don't have pages inside (it will tell you if it does).
For duplicate "Page" or "Redirect", compare the text content. If none is shown, I would keep the very last item in the list and delete the rest.
If you notice even after this that the wiki is still messed up, create a new database with your database backup and fill out the info in vault/core/controller/import/config/vw.php and let me know.
You do NOT need to restore your database. With the importer rather than the upgrader we can try as many times as we need to get the data without a problem. We may alter the upgrade process and just recommend this course in the future, since it's much much safer.