You can extract the file by yourself from the packs. Go into the tools directory and make a bat-file. Write this line into it:
Code:
unpacker.exe --source=..\..\packs\*.pack --destination=..\..\ --verbosity=1 --filter=battle_models.modeldb
After executed you can find the new file at data\unit_models\
There was a formatted battle_models.modeldb somewhere in the mod community that was easier to edit than the CA one. You could ask people who are working with it like GODzilla if they could send it to you.