# Migrate managed metadata between farms
# from: http://blog.kuppens-switsers.net/sharepoint/migrate-managed-metadata-between-farms/

# Export data
$mmsApplication = Get-SPServiceApplication | ? {$_.TypeName -eq "Managed Metadata Service"}
$mmsProxy = Get-SPServiceApplicationProxy | ? {$_.TypeName -eq "Managed Metadata Service Connection"}
Export-SPMetadataWebServicePartitionData $mmsApplication.Id -ServiceProxy $mmsProxy -Path "\\server\share\mmsdata.cab"

# Import data
$mmsApplication = Get-SPServiceApplication | ? {$_.TypeName -eq "Managed Metadata Service"}
$mmsProxy = Get-SPServiceApplicationProxy | ? {$_.TypeName -eq "Managed Metadata Service Connection"}
Import-SPMetadataWebServicePartitionData $mmsApplication.Id -ServiceProxy $mmsProxy -Path "\\server\share\mmsdata.cab" -OverwriteExisting