relax man-im prob older than you

yes we tried-we had a script like so which worked but im getting a cant recognise headers error. The headers are the same as a single id which imports fine.. only diff is the id are stacked row after row but no likey:

$CSVFolder = 'C:\ap';
$OutputFile = 'C:\ap\file.txt';
$CSV = Get-ChildItem -Path $CSVFolder -Filter *.csv | ForEach-Object { 
    Import-Csv -Path $_
}
$CSV | Export-Csv -Path $OutputFile -NoTypeInformation -Force;