Big Icon images have disappeared on categories content element

Issue: Big Icon images not showing on categories content element (home page) after reverting from child theme (showing fall-back instead)
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My directory site laid out nicely with all my Big Icon images showing perfectly and then I installed a child theme. Decided against the child theme and went back to the core theme and started putting everything back into its correct pre-child-nightmare place.

Big Icons still show up in my admin and in the category record, and I have reset the “Categories” Content Element back to it’s original “Side Display Medium” setting exactly as the demo.

I get the fall-back image, however, not the actual icon image for that category.

Have reloaded, have re-saved, have re-everything.

Suggestions or solutions appreciated. Thanks very much!