When products are exported to Prestashop from the Cloud, Prestashop uses the image associated with the particular product(if a image is associated) and makes multiple copies of image with different dimensions.

while updating the images of a particular product on a export, if all the previously associated images have not been deleted a manually delete is required.

1. Login to Admin Section of Prestashop:
2. 
3. Navigate to the products page:
4. 
5. Click on the edit button:
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7. Follow by clicking on the Images tab.
8. 
9. Click on the delete image button to delete all the images associated to that image.
10.