If you mean modifiers, it due to a bug in the unit modifier file. This post has fixed modifiers and some further tweaks though it would require a new game to properly take effect.
The Kaiserreich Dev-Team Proudly Presents: We, the Kaiserreich Team, are proud to present the most popular alternate history mod for Hearts of Iron II, Hearts of Iron IV & Darkest Hour! Originally thought by Sarmatia in 2005 the mod has...
forum.paradoxplaza.com
I can't seem to find an Austria or A-H event for the fall of CoF.