All my 20 contact forms on my site sends the user to a "thank you page". Naturally I thought the best solution was to set up a goal for each page with funnels, with the specific page as a "required step". That way, the only way it would show up as a conversion is when a user filled in the form on that specific page. Now it seems that I get a conversion eitherway. If a user complete the form on page A, I get 20 conversions. What am I doing wrong?