Purging editor cache to see changes?

I have a sub-nav drop down element linking to an asset (PDF). It works fine, except when I go to replace the asset with a new PDF, I publish the change, but the website still links to the old PDF. When I open the page in the Editor, I see the nav link IS pointing to the new document properly.

Even in Preview mode when Editing the page, it’s pointing to the old document. What’s going on? Is there something needing to be purged/cleared? Clearing my browser cache did nothing. Thanks-

bumping up this post.