Haven't tried it but perhaps a copy of
..\Achtung Panzer - Operation Star\data\k43t\shared\config\whole folder or the
config.cfgpack would solve that issue?
i.e.
- copy out the folder/files;
- update;
- rename the newly updated config folder (eg config.new - this way it can stay resident, just in case the old config screws with the update & it needs to be restored);
- Run the game & cross fingers