I had to re-create a bunch of new, duplicate pages to replace some pages in my workbook. I've already updated bookmarks to point to the new pages.
Before I go ahead and delete the old pages, how do I make sure there aren't any references or pointers to the old ones that I need to update?
Nope, power bi not contains any features to manage these dependencies between report pages.
AFAIK, current power bi only support to drill though and sync slicers and report level filter can effect other report pages.
Actually, remove bookmark not affect source data and visual style and dax formulas, it only effect button/shapes which you set up custom actions.