Magento 1.9.0.1 order email is changing to a previous order email

Question

We have a issue with a Magento 1 store in that order emails are being changed after an order has been placed. This specifically happening after repeat orders. I will try to explain.

1. Admin takes a call to place an order. This first order is a fresh order, not a repeat.
2. Admin then takes another call and its a repeat order. When the order is placed all the details are correct including the email address.
3. After placing the repeat order you notice that the email address has changed to that of the first order.

Any ideas or comments would be greatly appreciated.

Answer 1

As mentioned in my comment to Davidselo... I fixed this by creating a custom extension that checked the customers stored email and overwrote the order email if there was a difference between the two. Do this by creating a model observer and use

<?php 
class Companyname_extensionname_Model_Observer {
    public function admin(Varien_Event_Observer $observer) {
        $order = $observer->getEvent()->getOrder();
        $customer_id = $order->getCustomerId();
        $order_email = $order->getCustomerEmail();
        $customerData = Mage::getModel('customer/customer')->load($customer_id);
        $customer_email = $customerData->getData('email');

        // if email addresses are incorrect change the order email address to the customers default one.
        if($customer_email != $order_email{
            $order->setCustomerEmail($customer_email);
            $order->getResource()->saveAttribute($order, "customer_email");
        }
    } 
}