Can you specify where you see this documented? In the GUI there is a section for Move Across Cluster  [IMAGE]
I am new to the Vplex world and was reading the documentation for data mobility.  It states that you can use the GUI for VPlex Local, but for mobility in a Metro configuration you need to use the CLI.  Will this always be the case or are there plans to integrate that functionality into the GUI.  
VPlex Mobility - Moving data across a Metro configuration