Exporting using "Topic map without schema" broken

```
When exporting using the "Topic map without schema" feature the resulting 
topic map still contains Ontopoly-topics. The problem is that the 
filtering code is not generic enough and that the version upgrade caused 
it to break.
```

Original issue reported on code.google.com by `indiapaleale@gmail.com` on 22 Jun 2009 at 6:31
