You've installed the folders one step too far down in the directory tree. The way you did it installed 'data' and 'people' subdirectories inside the existing 'data' and 'people' directories. When this happens, Daz will display the menu items in the content window, but the underlying data links are broken.

If you want to use the 'My DAZ 3D Library' folder, then copy your data and people folders into that.

You don't need meta data unless you want the content to show up in the Smart Content. Personally, I prefer to put third party content in 'My Library.' Keeps Daz purchased content and third party content safely separated.