backup/Backup-Filters.ps1

#Requires -Version 7.0
function Backup-Filters {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory)] [string]$BackupPath,
        [Parameter(Mandatory)] [SecureString]$Token,
        [hashtable]$ScopeTagMap = @{}
    )

    try {
        $folder = Join-Path $BackupPath 'Filters'
        $uri = '/beta/deviceManagement/assignmentFilters'
        $items = Invoke-GraphRequest2 -Uri $uri -Token $Token

        foreach ($item in $items) {
            $clean = Remove-VolatileKeys -InputObject $item
            Save-BackupItem -Item $clean -Folder $folder -ScopeTagMap $ScopeTagMap
        }
        Write-Verbose "backed up $($items.Count) filters to $folder"
    }
    catch {
        Write-Error "failed to backup filters: $_"
        return
    }
}

Export-ModuleMember -Function Backup-Filters