Too Many Images Generated!

hi, everyone,

i hope someone can help me here!
I see the directory of the images growing more than needed. when I point deffrent variations of a product to the same image on the server, the CS-cart is duplicating the image with different names! why is that? (check the images attached)
it is the same product and the same image why duplicating it for each Different Variation!!

this is increasing the web loading time+more date on the server!!
Does anyone have a solution on how to use the same image for different variations?