Attributes Pictures folder?

[PortraitArtist]

Hi, Everyone,
Our ZenCart is running for about two weeks now and we put up 4-5 attributes pictures with every product. We don't use swatches, we show the whole product in different colors. We have hundreds of picture in the attributes folder now.
There is a dropdown list in the Attribute Controller page for the folder selection, where the pictures will go.
I created new folders for the different categories to minimize the pictures in every folder under 100.
When I tried to upload the images, Zen cart did not put the pictures in the new folders I created.
Is there a naming restriction for the folders, or Zencart don't recognize anything besides the "attributes" folder.
I know there is the additional pictures option, but the problem would be the same, too many pictures in one folder.
Please let me know if there is any solution to separate images to different folders for the attributes.
Thank you, Istvan