Trouble with Units in Illustrator 2023

I am working on a deadline trying to finish a book and I am having a strange problem in Illustrator. What I want to do is open an .ai document and reduce it to the 5x7" margins my publisher insists on. I have done this countless times on other files and it has worked, but with this one I can't get it to measure my image in inches; it insists on points. As I have shown in the attached screenshot, I have set the preferences to use inches as the prefered unit. Can anyone help me?