How can I modify this Powershell script to add the location?

Current script:

$InputFile = "C:\Data\Original.txt"
$OutputFile = "C:\Data\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 "(SA\*)|(PID\*)|(PO1\*{2})|(IEA\*)"}
	}
Process{
	$Data | % {
	#Check the end of data set
		If ($_ -match "IEA\*"){
			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 "(SA\*)(\d{0,10})"){
			$poline = "PO Number: $($Matches[2])"
		}
		#Collect PO1 details and following PID Discription
		If($_ -match "(PO1\*{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
}

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Sample Source Data:

  ISA*00*          *00*          *AA*PPPPPP         *11*4165555555     *999999*0001*P*00123*00000020*0*R*>~
  GS*PO*4161234567*4164567894*20100917*0018*0199*X*001111PQRS~
  ST*150*12345678~
  BEG*00*SA*8888888887**20140917~
  FOB*PB~
  DTM*119*20131002~
  DTM*004*20131008~
  N9*AH*4802028592~
  MSG*Message.~
  MSG*Message~
  MSG*Message~
  N1*SU*Company*8*123456789~
  N1*BT*Name*8*1234567891234~
  N3*1 Company~
  N4*LOC*BB*ABC  DEF*CA~
  N1*ST*D021 Loc*9*1234567891236~
  N3*Street~
  N4*Location*BB*ABC DEF*CA~
  PO1**10*CA*12**UK*12345678912345~
  CTP**UCP*12~
  PID*F****ITEM 1 DESCRIPTION~
  PO4*10~
  PO1**50*CA*20**UK*23456789123456~
  PID*F****ITEM 2 DESCRIPTION~
  PO1**30*CA*14.03**UK*34567891234567~
  CTP**UCP*14.03~
  PID*F****ITEM 3 DESCRIPTION~
  PO4*15~
  PO1**10*CA*20.50**UK*45678912345678~
  CTP**UCP*20.50~
  PID*F****DESCRIPTION FOR ITEM 4~
  PO1**100*CA*18**UK*78945612345678~
  PID*F****THIS IS ITEM 5~
  CTT*5~
  SE*45*12345648~
  GE*2*1234~
  IEA*1*000025011~
  ISA*00*          *00*          *AA*PPPPPP         *11*4165555555     *999999*0002*P*00123*000000021*0*R*>~
  GS*PO*4167913211*4162475478*20100917*0019*0200*X*001111PQRS~
  ST*150*2345678~
  BEG*00*SA*8888888891**20130917~
  DTM*119*20131001~
  DTM*004*20131002~
  N9*AH*1234034034~
  N1*ST*D072 LOC*9*2471916380072~
  N3*2700 NAME~
  N4*CITY*QQ*ABC DEF*CA~
  PO1**2*CA*40.10**UK*10060383002975~
  CTP**UCP*40.10~
  PID*F****DESCRIPTION~
  PO1**20*CA*10**UK*21234567897450~
  PO1**30*CA*11**UK*45678912345678~
  PO1**50*CA*22.05**UK*1234567895458~
  CTP**UCP*22.38~
  PO1**80*CA*20**UK*4567894578454~
  SE*40*50501231~
  GE*1*1234~
  IEA*1*000014052~

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I would like to add a Location to the output.

Currently, the output displays similar to this:

PONumber: 1234561234
 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

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I would like the output to look like this, notice the Ship To information.

 PONumber: 1234561234
 Ship To:  Street, Location
 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

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NB - The Ship To information comes from the 2nd instance of the N3 and the N4

For example,
In the first set of data between ISA and IEA, the 2nd instance of N3 and N4 looks like this:

  N3*Street~
  N4*Location*BB*ABC DEF*CA~

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The second line in the output data needs to pickup the Street and the Location after the first asterisk.