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//////////////////////////////////////////////////////////////
///////// STOP WP REMOVING TAGS
//////////////////////////////////////////////////////////////
function ikreativ_tinymce_fix( $init )
{
    // html elements being stripped
    $init['extended_valid_elements'] = 'div[*], article[*]';

    // don't remove line breaks
    $init['remove_linebreaks'] = false;

    // convert newline characters to BR
    $init['convert_newlines_to_brs'] = true;

    // don't remove redundant BR
    $init['remove_redundant_brs'] = false;

    // pass back to wordpress
    return $init;
}
add_filter('tiny_mce_before_init', 'ikreativ_tiny_mce_fix');