We're using the bugzilla importer to import defect information from
another bug tracking tool. I can't seem to get the category set on
import. I've tried numerous combinations of <product> and <component>
tags on the import source, and also a variety of things on the mapping
file and nothing seems to work. The technote for importing from Bugzilla
suggests with regards to value mappings:

Category: the target id is a path of category names. If a Bugzilla
product is mapped to a category all Bugzilla components of that product
are mapped to subcategories of that category unless there is an explicit
value mapping for such a component. Categories are created during import
if necessary.

If I have categroies such as these:
RTCProject
SubCategory1
SubCategory2

And an input file that includes:
<product>RTCProject</product>
<component>SubCategory1</component>

And a mapping file:
<attribute>

Shouldn't the workitem being imported be assigned to the "SubCategory1"
category or the "RTCProject"?

I also tried only specifying
<component>RTCProject/SubCategory1<component> in the input source, and a
mapping of <attribute>

And lastly, I tried explicit value mappings using:
<attribute>
<value><!--
</attribute>

Where am I going wrong?

Thanks, Brian