Why is my file name displaying a different name when I open it?

Originally I created a document for one company with its own unique file name, and in trying to use that form again for a different company, I was able to change the file name to the new company name BUT it still displays with the first company name in the title (Adobe Pro DC) in the Adobe open files.

How do I change that? I've been through all the property areas and there is nothing that shows the first company name so I can remove it.