Great question!!!

Why is it that when you're in training mode and for example:
lesson number 1 (then all the moves are listed)
why is it that it IS simplier to perform these commands when they are ON THAT NUMBER BUT they are difficult doing that AGAIN once you're in ANOTHER
LESSON?

im sure many of you can notice

 

some of the command/combo stuff need a counter hit, which are provided in those specific lessons. that's why some combos might not work in other levels as the other levels don't provide you with the same circumstances.

 

If you want you can just lock the move in training or change the situation