O, sorry, can't help. I have only baked it fresh/refrigerated to refirm the butter.
When I've frozen the dough, I let it thaw in the refrigerator before using. Did you see my comment above to charlie about NOT tossing the cookies in a bag with the powdered sugar? I leave them on the cooling tray and when completely cool heavily sift the powdered sugar over them. They don't end up with powder on the bottom, but the coverage is much more consistent and I don't worry about breakage.