When you speak of moisture transfer you must also speak of temperature. Something that may be causing confusion is moisture content vs. relative humidity. Secondly, wax is not hydroscopic. With cool temps in the winter and a wax coating not much moisture is going to transfer either way from the honey.
What I don't understand is why uncapped honey frames crystallize in a refrigerator. If honey crystallizes at 57 deg. I would think 45 deg is far enough away from that point. And a frost free refrigerator is taking the moisture out.