Ad Hoc Analysis is broken and unusable

Since the update last week, Ad Hoc Analysis is broken and unusable by our organization.  All existing calculated metrics have errors and we have been told that all of our metrics need to be manually rebuilt, which we have thousands of.  The ability to copy and edit calculated metrics has been removed, so each metric needs to be built from scratch.  All calculated metrics bring back the same results, even when building them from scratch.  Editing an existing calculated metric, renaming and saving as a new metric changes both the original metric and the new metric.  There is no documentation on how to use these now.  We are also unable to save any projects and some of our projects are randomly disappearing even when saving in the console or saving a local copy.  All of our existing projects that contain calculated metrics need to be rebuilt with new calculated metrics, however, when rebuilding and saving, the updated version does not save.  The updated version, when re-opened, contains a blank slate and all work is lost.