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<?php
/**
* Gravity Wiz // Gravity Forms // Skip Pages on Multi-Page Form
* http://gravitywiz.com/2012/05/04/pro-tip-skip-pages-on-multi-page-forms/
*/
add_filter("gform_pre_render", "gform_skip_page");
function gform_skip_page($form) {
    if(!rgpost("is_submit_{$form['id']}") && rgget('form_page') && is_user_logged_in())
        GFFormDisplay::$submission[$form['id']]["page_number"] = rgget('form_page');
    return $form;
}