Hello,
I am trying to migrate some reviews form Hikashop to Komento (Hikashop is not supported on your side, but it is in their side as they have integrated Komento as an alternative to their default review/comment system).
The bigger issue is that in your migrator there is nothing I can select in the "Component field", the hikashop_vote db table doesn't seem to have any row to identify the component, I tried ot run the migrator by letting Component as "none"; but it associates the Hikashop reviews to random Joomla articles, and not to the Hikashop products they really come from.
see attached screenshots
A minor issue, if the first is solved, is that in the migrator is missing a filed to migrate also the comment rating value, since reviews are present in Komento that would be a nice addon.