要更新Authorize.net上现有CIM记录上的帐单地址，您可以使用Authorize.net的API来实现。以下是使用Authorize.net的PHP SDK进行更新的示例代码：

setName("YOUR_API_LOGIN_ID");
    $merchantAuthentication->setTransactionKey("YOUR_TRANSACTION_KEY");

    // Create a new customer address object
    $customerAddress = new AnetAPI\CustomerAddressType();
    $customerAddress->setFirstName($newAddress['firstName']);
    $customerAddress->setLastName($newAddress['lastName']);
    $customerAddress->setAddress($newAddress['address']);
    $customerAddress->setCity($newAddress['city']);
    $customerAddress->setState($newAddress['state']);
    $customerAddress->setZip($newAddress['zip']);
    $customerAddress->setCountry($newAddress['country']);

    // Create a new customer address update request
    $request = new AnetAPI\UpdateCustomerShippingAddressRequest();
    $request->setMerchantAuthentication($merchantAuthentication);
    $request->setCustomerProfileId($customerProfileId);
    $request->setAddress($customerAddress);
    $request->setCustomerAddressId($customerAddressId);

    // Create a new API controller and execute the request
    $controller = new AnetController\UpdateCustomerShippingAddressController($request);
    $response = $controller->executeWithApiResponse(\net\authorize\api\constants\ANetEnvironment::SANDBOX);

    // Check if the API call was successful
    if ($response != null && $response->getMessages()->getResultCode() == "Ok") {
        // Address update successful
        return true;
    } else {
        // Address update failed
        return false;
    }
}

// Usage example
$customerProfileId = "YOUR_CUSTOMER_PROFILE_ID";
$customerAddressId = "YOUR_CUSTOMER_ADDRESS_ID";
$newAddress = [
    'firstName' => 'John',
    'lastName' => 'Doe',
    'address' => '123 Main St',
    'city' => 'New York',
    'state' => 'NY',
    'zip' => '10001',
    'country' => 'US'
];

$result = updateCustomerAddress($customerProfileId, $customerAddressId, $newAddress);
if ($result) {
    echo "Address update successful";
} else {
    echo "Address update failed";
}
?>

请注意，您需要将YOUR_API_LOGIN_ID和YOUR_TRANSACTION_KEY替换为您Authorize.net帐户的实际凭据。您还需要提供正确的$customerProfileId和$customerAddressId来指定要更新的客户和地址。

此示例假设您已安装Authorize.net的PHP SDK并将其包含在代码中。您还需要根据您的环境（SANDBOX或PRODUCTION）调整$controller->executeWithApiResponse()的参数。

这是一个基本示例，您可以根据您的需求进行修改和扩展。详细的Authorize.net API文档可以在Authorize.net的开发者门户网站上找到。