I'm not sure what caused the small image that was appearing at the bottom of each product page to disappear, but they are no longer showing up.

I checked back on several products to make sure the images were still loaded in the Pictures tab at the Edit Product Details page and on the Product variant screen.  Both images are still there.

The only thing I can figure is I just completed one section of inventory and went back through the Manage Categories and distributed them to the main category items where they belong.  Prior to this I was adding them through the Edit Product Details page using Category Mappings.

Has anybody else had this issue?

Do I need to go back to each product and map it to the various categories?  

When I found the ability to easily add them through the Category List > Edit > Products I thought I'd struck gold, but if the image disappears when the products are assigned to categories using this method/route then I need to re-think how I want to present my Product Pages.

Any insights will be appreciated!