Music subfolder in iTunes media

Hi,

Recently got a new computer and imported the whole iTunes media folder there into iTunes. This worked fine. However now when I import new music, iTunes moves the files into the root of the iTunes media folder, instead of the music sub folder as it previously did (i.e. it creates a folder with the artist name directly in the iTunes media folder). It even does that when I play existing music, it then copies the files from the music sub folder into the root of the iTunes media folder.

The "Keep iTunes Media folder organized" option is selected (and also was selected on my old PC).

Does anyone have an idea why this is happening?

Regards, Robert