wildfire config.pro option documentation for: ATB_IDENT_CADDS_FILES            

atb_ident_cadds_files

yes, no

controls the display of cadds models as file or directory  icons in the fileopendialog box.

note:cadds 5 models are directories and not individual files.

• noodisplays cadds models as folder icons in the fileopendialog box for all type filters except for the cadds 5 filter. for the cadds 5 filter, the cadds 5 models are displayed as file icons. you can open the cadds 5 files only when the cadds 5 filter is explicitly set.