All of the docs I can find online at the Alaska Elections site still seem to say there can’t be any write-in votes for Miller as far as I can tell.
Perhaps it’s word games and any write-in for Miller will not be “cast properly”...
Official statement of Lt Gov Campbell here saying that the votes for Miller WILL be counted.
http://ltgov.alaska.gov/campbell/lieutenant-governor/full-press-release.html?pr=130