Two different archive pages showing the same content

Finally I found a solution. Maybe it could help someone else.

In my archive-filme.php I just used the basic loop:

<?php if ( have_posts() ) : ?>  
    <?php while ( have_posts() ) : the_post();
         get_template_part( 'content', get_post_format() );
     endwhile; ?>
<?php else : ?>
     <?php get_template_part( 'content', 'none' ); ?>
<?php endif; ?>

Now I use a page with an custom-template. In the content-div I placed
include get_bloginfo( 'url' )'/filme/?' . urldecode( $_SERVER["QUERY_STRING"] )
The query_string, cause I need to pass some GET-variables to the page.

For the ajax solution I used the checkboxes provided by Query Multiple Taxonomies and loaded the archive-filme.php into my content-div, again with the get variables.
I’m really not sure if this weird text can help someone, but I hope so.