Excuse my ignorance, how is this different from just not wiping data?
I follow other forums and have noticed that some people do for whatever reason have issues booting into the new build when they don't wipe data so i figured this could just be a way to get around having that problem. So for people who are worried about not wiping it's just another option, at least you'll know you won't have problems booting into the rom unless of course it's because of some other user error.
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