Refresh "older" APM Policy?

Re-evaluation of authentication/authorization logic is a great thing to keep on top of. 

APM's customization system is complicated. The template files that define all of the end-user facing HTML and JS are written when you first create the per-session access profile (which also creates the policy). You'll have to create a new one to try out Modern. Other than the end-user web content, modern and standard policies operate the same way.