In case anyone else was hoping for an answer, I called Wilton and they said absolutely not. So, I baked the pound cake, cut it into shapes and froze them in a Ziploc. Then, I made the poured fondant and refrigerated it. I'll thaw the cake, reheat the fondant, and assemble them Saturday morning.
the one time i froze cookies with poured fondant, they thawed with a terribly ugly patchy, splotchy surface.
Sugar in fondant is hygroscopic it will absorb any condensation that forms when you pull them from the freezer. Perhaps you could freeze them unglazed.
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