RDF dump VS Regular DMOZ Search

Why we can't see some websites in the latest RDF dump (23-Oct-2011), while it can be found by using the DMOZ search feature?

In addition, some of these websites are already exist in the both of old RDF dump (25-Oct-2010) and by the DMOZ search, like gmjournal.net, but it can't be found in the latest version. Not only that, but there is some websites that even can't be found neither in the latest RDF version nor the oldest one, but it does by DMOZ search, like nonviolence.org.

This is the weirder issue I ever seen!! How you may explain that?

We are having a few issues with our search engine, which isn't updating properly. So some removed sites still show up in search, and some recently added ones don't. The RDF should be error free, unlike the search (they are different databases).