Import-GPOBaselines.ps1

#Requires -Modules GPWMIFilter
#Source: https://gallery.technet.microsoft.com/scriptcenter/Group-Policy-WMI-filter-38a188f3
function Import-GPOBaselines {
    param(
        # Specifies a path to one or more locations.
        [Parameter(Mandatory = $true,
            Position = 0,
            ValueFromPipeline = $true,
            ValueFromPipelineByPropertyName = $true,
            HelpMessage = "Path to the folder containing the exported GPO baseline folder.")]
        [Alias("PSPath")]
        [ValidateNotNullOrEmpty()]
        [ValidateScript( {Test-path -Path $_ -PathType Container} )]
        [string[]]
        $Path
    )
    $reports = Get-ChildItem -Recurse -path $Path -Filter 'gpreport.xml'
    foreach ($report in $reports) {
        [XML]$XML = Get-Content -Path $report.fullname
        $BuildVersion = $report.FullName.Split('\')[-4].split('-')[-1]
        $GPName = $BuildVersion + ' - ' + $Xml.gpo.Name
        $BackupID = $report.FullName.Split('\')[-2].replace('{', '').replace('}', '')
        $BackupPath = Split-path -path (Split-Path -path $report.FullName -Parent) -Parent
        $GPO = Import-GPO -BackupId $BackupID -Path $BackupPath -TargetName $GPName -CreateIfNeeded
        $wmifilter = Get-GPWmiFilter -All | Where-Object {$_.name -match $BuildVersion}
        $GPO.WmiFilter = $wmifilter
    }
}
Import-GPOBaselines -Path 'ExportPath'