Several thoughts.
If the site was moved to another category the editor may not have had permissions to republish it in the new location
If the site has changed ownership, it needs a full re-review to ensure it is still listable
If it was in a National level category, the site may not have been correctly listed there and has been moved to the location(s) shown on the site (Note this is true if you are looking at Regional
www.dmoz.org/Regional/ as the top level category - there are Topical categories sub divided as far as country/state which list sites using a different criteria.
Since it is obvious the request has been actioned in some way "dmoz subsequently remove the site from its original national region" and we do not provide details on individual sites, all you can do is wait to see when/if it is relisted.