okay this trick is pretty straight foward and really easy if you are a platinum/tamer king first degenerate the digimon that you want its aptitude to get raised to its in-training generation, then go to the core field and bring some strong monsters after 1 battle you should be able to digi-volve your in-training and degenerate it again. your aptitude should go up by 1 every time (if you want to go higher than the rookie lvl thats okay too)you will also get higher stats. i got a lvl 43 evil cheribuman with an aptitude of 77 and 400 attk pionts in 2 hours.
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