it is a good possibility that the frog is stressed out from moving from terrarium to terrarium. your best bet is to throw a dozen live pinhead crickets in there and try to keep track of them and watch for more poop for a few days. the frog will only eat every few days anyways. i only say crickets because the two red eyes that i have will only eat crickets. ive tried feeding them different types of worms and they wont touch them.