Have a look if you have two content directories for DAZ {eg: DAZ/studio/contents/ , DAZ/studio3/contents/} ...
You may not be searching the correct directory. You can add them from the Preferences Tab.

Example of how my directories are listed in the Preferences Directories Tab.

Daz Studio Formats:
DAZ/Studio3/contents/
DAZ/Studio/contents/shader mixer presets/presets/

Poser Formats:
DAZ/Studio/contents/

Other Supported Formats:
DAZ/Studio/contents/