Biblio import: taxonomies don't index in facets

Hi

Not sure if this is something that needs dealing with in biblio or in facets, but:

When importing bibliographic data through biblio's import function, biblio gives you the option of applying taxonomy classification to the nodes it creates. For example, I'm attaching 'unread' to mine.

However, biblio facet doesn't detect this. I have to manually go and rebuild the index. It's fine then - but is there any way of automating this process?

Thanks,

Dan