Another problem: All imported products are 'orphaned' even though I've assigned a term id to each of them like so:
<product>
<type>product</type>
...
<categories>
<category>
<id>11</id>
</category>
</categories>
</product>The terms were created before the import in admin/content/taxonomy. The tid '11' corresponds to one of those terms. What's wrong? (There is no insert to the term_node table in uc_importer...)