Imported Comments Not Counted

Hi,

I’ve imported posts from a custom blog, into wordpress, and have imported some comments from the custom blog into wp_comments.

However, these imported comments don’t show up under the “X Comments” of the post they are related to.

I assumed that the relevant fields were _post_id,_author,_date,_content and _approved. Even though the data appears ok in the table, the numbers don’t appear on the blog post…

What am i missing?

Thanks!