[Sendric]

Originally Posted by Mathias

There's a category of class variants in the game that replace a single level of a class, altering its hit dice, attack bonus, saves, etc. That's what the option to replace a single level is used for - it's only needed if you're fooling with those statistics of the class, and only if you're altering them by different amounts at different levels.

If you're just affecting the class' abilities, you have the option to use the "replaces all levels" option no matter how many or how few of the class' abilities you're replacing.

Yes. Sorry if I wasn't clear on that.