Improved review changes experience

In the portal, Site Administrators are able to create different User Experiences for Pages. Publications can publish these Experiences. However it can be confusing for Publication Reviewers that they can not review changes introduced in all the Experiences, which are going to be published. Here we added the ability to Publication Reviewers to view changes added in all the Experiences which are going to be published.

Status: Generally Available (aka OOTB)