Ya it looks like Chromaphone is different from the others and you have to place the banks into a specific path:
I found this from my Chromazone soundbank purchase read me file - sorry for the confusion. It has been a while since I've downloaded a soundset for Chromaphone-
5 Chromaphone Banks:
CZ Achromatic Percussion
CZ Chromatic Percussion
CZ Hybrid Instruments
CZ Synths&Keys
CZ Textures
In order to use the patches inside the Chromaphone Patch Browser place the 5 CZ folders here:
Mac: User (you)/Library/Application Support/Applied Acoustic Systems/Chromaphone/Banks
Windows: %AppData%\Applied Acoustics Systems\Chromaphone\
Looks like there is no import required
Hope this helps and again sorry for steering you wrong