Back button appearing when it is not supposed to.

What I what to do is that the first step in my wizard is selecting an action and depending on the selected action there are one or more steps.
The combination of the wizard, (popup)modal and a changeing number of steps is not working. If you have ideas how I can fix this. Please let me know.

After selecting the action the $form_info['order'] is changed. With the regular wizard page all is good. With the wizard in the (ajax)modal the new $form_info['order'] is lost or is using a cached old version.
I can make a simple example that has the problem in it.

I have made a small module for my example. In my example I do two attempts to change the order.
To produce the bug: Open the wizard in the modal. Then in the wizard select action2.
What happens: The trail changes the calling form does not.

My code for modalwizard.module:

<?php

/**
 * Implements hook_menu().
 */
function modalwizard_menu() {
  $items['modalwizard'] = array(
    'title' => 'Operation',
    'page callback' => 'modalwizard_page',
    'access callback' => TRUE,
    'type' => MENU_NORMAL_ITEM,
  );
  $items['modalwizard/%ctools_js/action'] = array(
    'title' => 'Operation',
    'page callback' => 'modalwizard_wizard',
    'page arguments' => array(1),
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );

  return $items;
}

/**
 * Page menu callback.
 */
function modalwizard_page() {
  ctools_include('modal');
  ctools_include('ajax');
  ctools_modal_add_js();

  $output = 'start: '.ctools_modal_text_button('wizard in modal', 'modalwizard/nojs/action', '');
  $output .= '<br><br>';
  $output .= 'start: '.l('wizard in page', 'modalwizard/nojs/action');
  return $output;
}

/**
 * Page menu callback.
 */
function modalwizard_wizard($js = NULL, $step = NULL) {
//dsm('modalwizard_wizard');
  if ($js) {
    ctools_include('modal');
    ctools_include('ajax');
  }

  $form_info = array(
    'id' => 'action',
    'path' => 'modalwizard/' . ($js ? 'ajax' : 'nojs') . "/action/%step",
    'show trail' => TRUE,
    'show back' => TRUE,
    'show cancel' => TRUE,
    'show return' => FALSE,
    'next callback' =>  'modalwizard_wizard_next',
    'finish callback' => 'modalwizard_wizard_finish',
    'cancel callback' => 'modalwizard_wizard_cancel',
    'forms' => array(
      'start' => array(
        'form id' => 'modalwizard_start'
      ),
      'action1_configure1' => array(
        'form id' => 'modalwizard_action1_configure1'
      ),
      'action2_configure1' => array(
        'form id' => 'modalwizard_action2_configure1'
      ),
      'action2_configure2' => array(
        'form id' => 'modalwizard_action2_configure2'
      ),
    ),
  );

  $object_id = 1;

  if (empty($step)) {
    // We reset the form when $step is NULL because that means they have
    // for whatever reason started over.
//dsm('modalwizard_cache_clear');
    modalwizard_cache_clear($object_id);
    $step = 'start';
  }

  // This automatically gets defaults if there wasn't anything saved.
  $object = modalwizard_cache_get($object_id);

  // Add the order
  $form_info['order'] = modalwizard_order($object->action);

  $form_state = array(
    'ajax' => $js,
    // Put our object and ID into the form state cache so we can easily find
    // it.
    'object_id' => $object_id,
    'object' => &$object,
  );

//dsm($form_info);

  // Send this all off to our form. This is like drupal_get_form only wizardy.
  ctools_include('wizard');
  $form = ctools_wizard_multistep_form($form_info, $step, $form_state);
  $output = drupal_render($form);

  // If $output is FALSE, there was no actual form.
  if ($js) {
    // If javascript is active, we have to use a render array.
    $commands = array();
    if ($output === FALSE || !empty($form_state['complete']) || !empty($form_state['cancel'])) {
      $commands[] = ctools_modal_command_dismiss();
    }
    else {
      $commands = ctools_modal_form_render($form_state, $output);
    }
    print ajax_render($commands);
    exit;
  }
  else {
    if ($output === FALSE || !empty($form_state['complete']) || !empty($form_state['cancel'])) {
      drupal_goto('modalwizard');
    }
    else {
      return $output;
    }
  }
}

/**
 * Returns the order for the selected action.
 */
function modalwizard_order($action = 'action1') {
  if ($action == 'action2') {
    return array(
      'start' => t('Choose action'),
      'action2_configure1' => t('Action2 Configure1'),
      'action2_configure2' => t('Action2 Configure2'),
    );
  }
  else {
    return array(
      'start' => t('Choose action'),
      'action1_configure1' => t('Action1 Configure1'),
    );
  }
}

// ---------------------------------------------------------------------------
// Wizard caching helpers.

/**
 * Store our little cache so that we can retain data from form to form.
 */
function modalwizard_cache_set($id, $object) {
  ctools_include('object-cache');
  ctools_object_cache_set('modalwizard', $id, $object);
}

/**
 * Get the current object from the cache, or default.
 */
function modalwizard_cache_get($id) {
  ctools_include('object-cache');
  $object = ctools_object_cache_get('modalwizard', $id);
  if (!$object) {
    // Create a default object.
    $object = new stdClass;
    $object->action = 'action1';
  }

  return $object;
}

/**
 * Clear the wizard cache.
 */
function modalwizard_cache_clear($id) {
  ctools_include('object-cache');
  ctools_object_cache_clear('modalwizard', $id);
}

/**
 * Handle the 'next' click on the add/edit pane form wizard.
 *
 * All we need to do is store the updated pane in the cache.
 */
function modalwizard_wizard_next(&$form_state) {
  modalwizard_cache_set($form_state['object_id'], $form_state['object']);
}

/**
 * Handle the 'finish' click on teh add/edit pane form wizard.
 *
 * All we need to do is set a flag so the return can handle adding
 * the pane.
 */
function modalwizard_wizard_finish(&$form_state) {
  $form_state['complete'] = TRUE;
}

/**
 * Handle the 'cancel' click on the add/edit pane form wizard.
 */
function modalwizard_wizard_cancel(&$form_state) {
  $form_state['cancel'] = TRUE;
}


/**
 * Wizard start form. Choose an action.
 */
function modalwizard_start($form, &$form_state) {
  $form_state['title'] = t('Choose action');

  $form['action'] = array(
    '#title' => t('Choose action'),
    '#type' => 'radios',
    '#options' => array(
      'action1' => 'action1',
      'action2' => 'action2',
    ),
    '#default_value' => $form_state['object']->action,
    '#required' => TRUE,
  );

  return $form;
}

/**
 * Submit wizard start form.
 */
function modalwizard_start_submit(&$form, &$form_state) {
  $form_state['object']->action = $form_state['values']['action'];

  // Change the order
  $form_state['form_info']['order'] = modalwizard_order($form_state['values']['action']);

  // Change the next form
  $form_state['clicked_button']['#next'] = $form_state['values']['action'].'_configure1';

//dsm('modalwizard_start_submit');
//dsm($form_state);
}

/**
 * Wizard form action1 configure1.
 */
function modalwizard_action1_configure1($form, &$form_state) {
//dsm('modalwizard_action1_configure1');
  $form_state['title'] = t('Action 1 Configure 1');

  $form['name'] = array(
    '#type' => 'textfield',
    '#title' => t('Name your action1'),
    '#default_value' => isset($form_state['object']->name) ? $form_state['object']->name : '',
    '#required' => TRUE,
  );

  return $form;
}

/**
 * Submit wizard form action1 configure1.
 */
function modalwizard_action1_configure1_submit(&$form, &$form_state) {
  $form_state['object']->name = $form_state['values']['name'];
}

/**
 * Wizard form to action2 configure1.
 */
function modalwizard_action2_configure1($form, &$form_state) {
//dsm('modalwizard_action2_configure1');
  $form_state['title'] = t('Action 2 Configure 1');

  $form['name'] = array(
    '#type' => 'textfield',
    '#title' => t('Name your action2'),
    '#default_value' => isset($form_state['object']->name) ? $form_state['object']->name : '',
    '#required' => TRUE,
  );

  return $form;
}

/**
 * Submit wizard form action2 configure1.
 */
function modalwizard_action2_configure1_submit(&$form, &$form_state) {
  $form_state['object']->name = $form_state['values']['name'];
}
/**
 * Wizard form to action2 configure2.
 */
function modalwizard_action2_configure2($form, &$form_state) {
//dsm('modalwizard_action2_configure2');
  $form_state['title'] = t('Action 2 Configure 2');

  $form['amount'] = array(
    '#type' => 'textfield',
    '#title' => t('Amount for action2'),
    '#default_value' => isset($form_state['object']->amount) ? $form_state['object']->amount : '',
    '#required' => TRUE,
  );

  return $form;
}

/**
 * Submit wizard form action2 configure2.
 */
function modalwizard_action2_configure2_submit(&$form, &$form_state) {
  $form_state['object']->amount = $form_state['values']['amount'];
}

My code for modalwizard.info:

name = Modal Wizard Test
description = Modal wizard changing the order test.
core = 7.x
version = 1.x-dev
dependencies[] = ctools

@leolando.tan: I am happy that my patch solves your problem. I would love to get this patch committed. The problem is that somebody else needs to review this patch. If that somebody has reviewed this patch and comes to the conclusion that this patch is worth to be upgraded to status of RTBC (Reviewed and Tested By the Community), then the module maintainer can commit this patch. And I am hoping that you will be the one who will do the review. You will be helping the drupal community. The drupal community has lots of people who can help you.