Popup photo sorting

[DocRock]

I am attempting to add photos in a specific sort order to an existing popup. I want the newest photos to appear first. I selected the old ones and moved them to the back and moved the newest ones to the front. I also placed the newest photos first on the list in the Page & Layer gallery (no idea if this has any effect). The photos don't appear in the order I want. What am I missing? The attached xar file has the page if you need it to diagnose the problem.