Further modification to the current Powershell script

Modification to a script needs to be made to adjust to these changes in the source data.

Where the PO number is:
G50*N*20140916*999999~     (the position of the PO number is represented by 999999)

Where the PO1 and the PID used to be, now this is showing:

G80*10*CA*15.22*123456789123*IN*123456~
G81*DESC~


The script to work with:

$InputFile = "C:\original.txt"
$OutputFile = "C:\New.txt"

Function ParseText ($OutputFile,$InputFile){
Begin{
            $line,$poline,$totline,$total,$i = $null,$null,$null,$null,0
            Set-Content $OutputFile $null
            $Data = Get-Content -Path $InputFile | ?{$_ -match "(G50\*)|(G81\*)|(G80\*{2})|(EFG\*)"}
      }
Process{
      $Data | % {
      #Check the end of data set
            If ($_ -match "EFG\*"){
                  If($poline -ne $null -and $total -ne $null){
                        $Totline = "Total: `$$Total"
                        Write-host "This is Total `$$total"
                        #Write the data collection to output file
                        "$poline$line`r`n$totline`r`n" | out-file $OutputFile -Encoding UTF8 -Append
                        #reset the variables
                        $line,$poline,$totline,$total,$i = $null,$null,$null,$null,0
                  }
            }
            #Collect the PO Number
            If($_ -match "(G50\*)(\d{0,10})"){
                  $poline = "PONumber: $($Matches[2])"
            }
            #Collect  G80 details and following G81 Description
            If($_ -match "(G80\*{2})(\d{1,})\*(\w{1,})\*(\d{1,}(\.\d{1,})?)\*{2}(\w{1,})\*(\d{1,})"){
                  $i++
                  $total += [double]$Matches[2] * [double]$Matches[4]
                  $Desc = ($Data[([Array]::IndexOf($Data,$_)+1)] -split "\*\*\*\*|~")[1]
                  [String[]]$line += "`r`nItem $i`: UPC: $($Matches[7]), Desc: $Desc, Qty: $($Matches[2]) Price  `$$($Matches[4])"
            }
      }
 }
}

If(Test-Path $InputFile){
 ParseText $OutputFile $InputFile
}


Desired type of output:

PONumber: 999999
   Item 1: UPC: 12345678912345, Desc: information here, Qty: 248 Price: $10.00
   Item 2: UPC: 23456789123452, Desc: information here, Qty: 329 Price: $1.00
   Item 3: UPC: 98765432198765, Desc: information here, Qty: 20 Price $2.00
   Total: $Calculated total

  PONumber: 999985
   Item 1: UPC: 12345678912345, Desc: information here, Qty: 250 Price: $10.00
   Item 2: UPC: 23456789123452, Desc: information here, Qty: 200 Price: $1.00
   Item 3: UPC: 98765432198765, Desc: information here, Qty: 100 Price $2.00
   Total: $Calculated total


What changes need to be made to this script in order to produce the desired output?