Today I ran a ConfigMgr OS Upgrade task sequence configured to use the Enterprise edition of Windows 10 1709 on a workstation that had Windows 10 Pro 1703 installed. Since the VLC media for 1709 contains the various editions in different indexes, you are supposed to choose the relevant one in the Upgrade Operating System step.
Of course, I expected the TS to fail because the configured edition is different to the edition that TS was being run on – but to my surprise, it didn’t care and the TS succeeded! Windows 10 Pro 1703 was upgraded to Windows 10 Pro 1709.
Not sure if that’s a bug or a feature, but it’s actually quite convenient!