Managing VPGs : Moving a Virtual Machine To or From a Protected vApp
  
Moving a Virtual Machine To or From a Protected vApp
In vSphere Client console you can reconfigure vApps by dragging virtual machines to or from the vApp. In this case the Zerto Virtual Replication protection is updated automatically to recognize the changes to the vApp.
Removing a virtual machine from the vApp results in that virtual machine no longer being protected. However, protection of the remaining virtual machines continues uninterrupted. Conversely, moving a virtual machine to the vApp causes that machine to be automatically added to the VPG, with, wherever possible, the vApp default values set. The vApp VPG is updated and synchronization begins for the added VM between the protected and recovery sites.
Whenever a virtual machine is moved to or from a vApp, all the checkpoints are removed, since the VPG configuration is essentially new.
Note: If the default values cannot be set, for example the default recovery datastore does not have enough room, then the VPG is saved with a status of Needs Configuration. To initiate protecting the added virtual machine, you have to edit the VPG to define the datastore to use for the virtual machine and the test and failover networks.
If the added virtual machine was protected, it is unprotected before being protected as part of the vApp. If the added virtual machine was originally protected in a VPG containing other virtual machines, the VPG is resynchronized after the virtual machine which is added to the vApp is removed. If the added virtual machine was protected as the only virtual machine in the VPG, the VPG is deleted.