This script will either export SPBM policies to a folder or import SPBM policies from a folder.
Tested on vCenter 6.5 with PowerCLI 6.5, but should work with earlier versions.
Syntax is: To Backup SPBM Policies to a Folder XFER-SPBM-Policies.ps1 -Server -Action export -FilePath
To Restore SPBM Policies from a Folder XFER-SPBM-Policies.ps1 -Server -Action import -FilePath
Example moving from an old vCenter to a new VCSA: Connect-VIServer <old vcenter> XFER-SPBM-Policies.ps1 -Server -Action export -FilePath c:\policies\ Disconnect-VIServer Connect-VIServer <new VCSA> XFER-SPBM-Policies.ps1 -Server -Action import -FilePath c:\policies\ Disconnect-VIServer