Deleting images in other products

Hi there
Please help as this plugin has deleted images it should not have.

Expected behaviour:
Product 1 has image A and item is in stock and live on site.
Product 2 has image A as well (different size item shown as new product).

Product 2 is out of stock so I delete the product.
As product 1 shares the image with product 2 I should expect for product 2 to be deleted keeping image A on the site and product 1 should still show image A.

What happens:
Product 2 gets deleted and also removed image A from whole site so Product 1 no longer has product image showing.

In all your blurbs you state that if an image is being used elsewhere it will not be removed from the site. We have just found out that many of our products now do not show the images as they have been removed when they should not have been. Any help would be great.

Thanks
Sy