Also, I will add that if you meant that you were hitting 'command-i' in Photo Mechanic, that will open the Metadata Template -- which is where you would enter info that you want to apply to the photos, not to see what has already been added. To see the metadata in Photo Mechanic just press 'i' and you will see the Metadata Info for that specific photo.
You can also customize the Preview window to show that field, too. If you go to Edit > Settings > Set Info Text, you can add/change/delete what is shown in the preview window. In my Info Text (below) I've added Copyright: {copy} as a line, and that way I can see it very quickly in the Preview Window.
Hope that helps
-Mick