Installing Zerto Virtual Replication : Re-installing the Current Installation
  
Re-installing the Current Installation
If a new installation is the same version as the installed version, installation options are Reinstall or Uninstall.
When reinstalling the version, all pairing, VRAs and VPGs defined for the site are removed. Use the Zerto Diagnostics utility options Export and Import options, as described in Upgrading To More Than One Version Higher to save the settings.
If the vSphere Client console was open during the re-installation, close it and reopen it to ensure you use the upgraded Zerto User Interface.