What is the reason why the description of the au unit in the current table is not synchronized with what I know?

[jungyin]

I am currently viewing the au units from this website, but they cannot be synchronized with the au labels of the current model, which is very confusing to me. May I ask which one I should lean towards when training my dataset? I plan to use the Came3 dataset for further training and look forward to your reply!
https://imotions.com/blog/learning/research-fundamentals/facial-action-coding-system/