An uncommon clock function name

As non-native English speaker I perceived "unprepare" not as to undo the preparations but rather as to go from the initial state to the state where one would spend more efforts later if he wants to prepare. "Unprepare for a trip" would mean in that interpretation not to empty a travel bag and put things from it back to the shelves where they were before, but to make even more mess at home so it would be more difficult at some later point to pack things together in preparations for the trip.