Hi Chris,
We automatically try to update xmlns
:d=http://schemas.microsoft.com/expression/blend/2006 to xmlns:d=http://schemas.microsoft.com/expression/blend/2008 (which is the preferred namespace for designer properties that we presist in XAML). Do you find that both are missing (in which case the XAML is not invalid)? If so, this is not a known issue
From reading your post, it is not clear to me that just opening the file should remove it - what changes do you have to make to cause this inside Blend?
Thanks,
Unni
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