Starting with Release 4.2.0.0, Arcadia Enterprise does not support stand-alone visuals. This has the following implications when you upgrade from previous versions of ArcViz:
Visuals cannot exist on their own. They are automatically part of a dashboard.
You can unlink a visual so that it is no longer shared across dashboards. This process clones the visuals into all dashboards.
When you import a visual through the Visual Migration feature, Arcadia Enterprise saves it as a linked visual with no associated dashboard.
When you migrate to Release 4.2.0.0 from an earlier release, Arcadia Enterprise automatically wraps your existing standalone visuals inside a sheet in a dashboard.