Hi ll,
thanks for your feedback. Sorry for the delayed response and for not answering the questions above. I'm not part of the Windows product group so I don't know when this issue will be addressed. Anyway, I just wanted to point out that there are differences between the two ADMX versions (at the point of writing the article) but there is an "easy" workaround to get it solved. I most cases you won't even notice them because more than 99% of the settings within the ADMX are equal.
But I'm with you when you say that this can cause additional "trouble" in rare cases. I ran into this issue at one of my customers as well. I will try to contact the PG to get information if this will be fixed (and when) unless it's done on purpose. I will comment here.
Thanks,
Helmut