Magento – After Upgrade from Magento 1.7 to 1.9 OnePage Checkout Sidebar Not working properly

Try to rewrite below block files with following functions:

Rewrite class Mage_Checkout_Block_Onepage_Billing

    public function canShip()
    {
        return false;
    }

Rewrite class Mage_Checkout_Block_Onepage_Shipping_Method

    public function isShow()
    {
        return false;
    }

Rewrite class Mage_Checkout_Block_Onepage_Shipping

    public function isShow()
    {
          return false;
    }

I hope now issue related to progress will not occurs.

After spending lot of time, I got solution for this. If data is not getting from the extractData, you can set the value again for the firstname, lastname, email in app\code\core\Mage\Checkout\Model\Type\Onepage.php. You can copy paste Onepage.php to your local folder add the below lines look like below code.

$customer->setEmail($data['email']); $customer->setFirstname($data['firstname']); $customer->setLastname($data['lastname']);

    if ($quote->getCheckoutMethod() == self::METHOD_REGISTER) {
        // set customer password
        $customer->setPassword($customerRequest->getParam('customer_password'));
        $customer->setPasswordConfirmation($customerRequest->getParam('confirm_password'));
    } else {
        // spoof customer password for guest
        $customer->setEmail($data['email']); //email
        $customer->setFirstname($data['firstname']); //firstname
        $customer->setLastname($data['lastname']); //lastname
        $password = $customer->generatePassword();
        $customer->setPassword($password);
        $customer->setPasswordConfirmation($password);
        // set NOT LOGGED IN group id explicitly,
        // otherwise copyFieldset('customer_account', 'to_quote') will fill it with default group id value
        $customer->setGroupId(Mage_Customer_Model_Group::NOT_LOGGED_IN_ID);
    }

    $result = $customer->validate();`

I hope it will work fine and it will be helpfull for someone.