aleron75

// This snippet from line 267 of class Mage_Adminhtml_Model_Sales_Order_Create of Magento CE 1.8.x or EE 1.13.x
public function initFromOrder(Mage_Sales_Model_Order $order)
{
  // ...
  $this->getQuote()->getPayment()->addData($order->getPayment()->getData()); // line 329
  // ...
  $this->getQuote()->save();

  return $this;
}

aleron75

<?php
/** @var Mage_Eav_Model_Entity_Setup $installer */
$installer = $this;
$installer->startSetup();

$this->addAttribute(
    'catalog_category',
    'my_custom_attribute',
    array(
        'group' => 'General Information',