[DJ Mogarych]

Код:

$sgtin  = 'D:\temp\test_stgin\amark_sgtin.txt'
$repack = 'D:\temp\test_stgin\ITOG.txt'
$out    = 'D:\temp\test_stgin\out.txt'

[regex]$repackStrings = [System.IO.File]::ReadAllLines("$sgtin") -replace ';.*' -join '|'
[regex]$replace = ';\w+|\s+'
[System.IO.File]::WriteAllLines("$out", ([System.IO.File]::ReadAllLines("$repack") -match $repackStrings -replace $replace))