Edit does not working after changing type

I've import nodes from old site, after changing node-type from custom to faq I cant edit node
This because faq_update which is not checking result of update
Fix is to add db_affected_rows and call faq_insert if no rows updated

function faq_update($node) {
  if ($node->revision) {
    faq_insert($node);
  }
  else {
    db_query("UPDATE {faq_questions} SET question = '%s' WHERE nid = %d AND vid = %d", $node->title, $node->nid, $node->vid);
+    if (!db_affected_rows()) {
+    	faq_insert($node);
+    }
  }
}