I do, but there are some things that needs to be said.
Explanation
Even though you’re allowed to transfer save files (And I don’t restrict players from doing that, even in game), I don’t think it would be recommended since these challenges are made as an optional thing. It’s either challenge yourself to unlock challenges the right way, or just don’t do these challenges, even though I’m against the idea of cheating your way to get everything without effort (Though, Imo, it makes implementing challenges useless if anyone manages to save transfer to the 100% save file).
Plus, even if you do complete challenges, using any of the 3 unlockable cheats (Which are Passive Enemies, Inflate All Enemies, and Player Cheats) would prevent your score saved anyways.
Other than that, yes I do have the 100% save, but using this save file makes beating these challenges useless and there is no sense of achievement after playing the game. This game doesn’t have that much content when you 100% it, other than deleting your save and replaying the game from scratch.