cant seem to change image url. No idea why not

I have a production site at drshirleydavis.com. on some pages like drshirleydavis.com/blog, there is a custom header in the theme for certain pages. They just show the grey background now because the images are not found.

A closer inspection in chrome dev tools show that the images are still using the development url of drshirleydavis.dev.

Now I used the search and replace tool from https://interconnectit.com/products/search-and-replace-for-wordpress-databases/

which I always use and it always works fine, and all the other links and images seem fine. I just notice that these custom header images still retain the dev url, and for the life of me I cant figure out how to change it or why it happened.

I tried the search and replace again but any search for drshirleydavis.dev comes up empty…it cant be seen, but its obviously there somewhere.

What am I missing?

thanks for any help.