Hello there. I wanted to learn something. I have a legit Windows 8.1 Single Language key and Windows 8.1 Pro with WMC upgrade key. Now I am planning to reinstall my Windows 8.1 with update on my PC. I have downloaded Windows 8.1 with Update volume version since there is no Single Language versions available. I already search the forum but I just wanted someone to confirm that I can activate volume edition with Windows toolkit and then upgrade to WMC edition with my upgrade key and have activated Windows. Can KMS activated edition be upgraded to WMC edition?