Migrating nodes & comments from Event module to Date module

I have been using the event module for my karting website for a number of years now. The site is now on drupal 6 and I plan to migrate to 7 soon. the site: http://club.my-kart.org/

not having a properly converted event becomes a problem for my existing events as well as future event scheduling (as my karting group organises regular karting events).

i have been trying to do this... the "date tools-import" event-to-date-convertor creates new node numbers. by doing this, links from other nodes gets messed up. additionally, the comments are lost in doing so.

how can this be fixed?