In the Forge Viewer v6, the tool cannot recreate previously saved measurements, due to SnapResult either no longer having a constructor, or the constructor being moved:
var p = _currentMeasurement.setPick(json.id, new Autodesk.Viewing.Extensions.Measure.SnapResult())
Uncaught TypeError: Autodesk.Viewing.Extensions.Measure.SnapResult is not a constructor
In the Forge Viewer v6, the tool cannot recreate previously saved measurements, due to SnapResult either no longer having a constructor, or the constructor being moved: