Concerning the Transformation to LouisEX in World Records

[Zelphir]

I don't think it's a valid record attempt, if you enter the cheat again after choosing Crazy difficulty and then play on 'Crazy', because it significantly lowers the chance of enemy Louis transforming into Louis Ex, which he does sometimes. It's not the actual Crazy difficulty anymore, even if the difference might be a very minor one. As soon as there is an enemy Louis entering the stage, there is the chance of him transforming into Louis Ex and you would never know, how it would have ended if he transformed, which he cannot do as early when you enter the cheat again.
However, if it's not a record attempt, it's a good way to prevent yourself from transforming into Louis Ex accidently and a good idea.