trouble making a NG elven druid npc

[Legacy_yendys314]

               I'm trying to make an elven druid npc for a module I'm working on, but I'm running into some trouble.  She auto-generated from the wizard as a level 1 druid of chaotic good alignment(), which I changed to neutral good because of the druid class restriction.  However, I couldn't add class levels via the leveling up wizard when I decided I wanted her to be level 3 instead, because of the alignment.  I had to change her alignment to true neutral before I could add any class levels.  Why is that?
               
               

               
            

[Legacy_kalbaern]

               It's just something the creature wizard does. Anything with druid as a class generally needs to be set to neutral, then levelled up, then reset to whatever alignment you wish.