I have noted (and reported) the following issues when creating an NPC using the "Detailed Monster or NPC using Alien Archive" option.
I am using a custom race and class grafts, so I don't know if that changes the below issues. I have seen them happen with mechanics, operatives, and solarians.
- When you change the CR of the custom race creature, the system does not adjust the weapons suggestions that it makes based on the new CR**
- The system does not show in the UI which class features that apply based on the CR of the creature. It seems to think that you are always only CR1**
- When I generate a statblock, it is missing the class features.**
** Anecdotally, when I first started making NPCs using the "Detailed Monster or NPC using Alien Archive" option, I did not see these issues, but the system started manifesting the issues after I had created and duplicated the same NPC several times.