Почему скрипт powershell меняет вид разметки страницы Word'а?

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#Custom variables
$CompanyName = ‘BT'
$SigSource = "\\domain.com\SysVol\domain.com\Policies\{0CD7D3A9-1B70-4503-8746-89BC60B5F3F4}\User\Scripts\Logon\$CompanyName"
$ForceSignatureNew = '1' #When the signature are forced the signature are enforced as default signature for new messages the next time the script runs. 0 = no force, 1 = force
$ForceSignatureReplyForward = '1' #When the signature are forced the signature are enforced as default signature for reply/forward messages the next time the script runs. 0 = no force, 1 = force

#Environment variables
$AppData=(Get-Item env:appdata).value
$SigPath = ‘\Microsoft\Signatures'
$LocalSignaturePath = $AppData+$SigPath
$LocalSignatureFile = $LocalSignaturePath+'\'+$CompanyName+'.files'
$RemoteSignaturePathFull = $SigSource+'\'+$CompanyName+'.docx'

#Get Active Directory information for current user
$UserName = $env:username
$Filter = "(&(objectCategory=User)(samAccountName=$UserName))"
$Searcher = New-Object System.DirectoryServices.DirectorySearcher
$Searcher.Filter = $Filter
$ADUserPath = $Searcher.FindOne()
$ADUser = $ADUserPath.GetDirectoryEntry()
$ADDisplayName = $ADUser.DisplayName
$ADTelePhoneNumber = $ADUser.TelephoneNumber

#Setting registry information for the current user
$CompanyRegPath = "HKCU:\Software\"+$CompanyName

if (Test-Path $CompanyRegPath)
{}
else
{New-Item -path "HKCU:\Software" -name $CompanyName}

if (Test-Path $CompanyRegPath'\Outlook Signature Settings')
{}
else
{New-Item -path $CompanyRegPath -name "Outlook Signature Settings"}

$SigVersion = (gci $RemoteSignaturePathFull).LastWriteTime #When was the last time the signature was written
$ForcedSignatureNew = (Get-ItemProperty $CompanyRegPath'\Outlook Signature Settings').ForcedSignatureNew
$ForcedSignatureReplyForward = (Get-ItemProperty $CompanyRegPath'\Outlook Signature Settings').ForcedSignatureReplyForward
$SignatureVersion = (Get-ItemProperty $CompanyRegPath'\Outlook Signature Settings').SignatureVersion
Set-ItemProperty $CompanyRegPath'\Outlook Signature Settings' -name SignatureSourceFiles -Value $SigSource
#присваиваем переменные взяв значения из реестра
$TelephoneNumberREG = (Get-ItemProperty $CompanyRegPath'\Outlook Signature Settings').TelephoneNumber
$DisplayNameREG = (Get-ItemProperty $CompanyRegPath'\Outlook Signature Settings').DisplayName
  
$SignatureSourceFiles = (Get-ItemProperty $CompanyRegPath'\Outlook Signature Settings').SignatureSourceFiles

#Forcing signature for new messages if enabled
if ($ForcedSignatureNew -eq '1')
{
#Set company signature as default for New messages
$MSWord = New-Object -com word.application
$EmailOptions = $MSWord.EmailOptions
$EmailSignature = $EmailOptions.EmailSignature
$EmailSignatureEntries = $EmailSignature.EmailSignatureEntries
$EmailSignature.NewMessageSignature=$CompanyName
$MSWord.Quit()
}

#Forcing signature for reply/forward messages if enabled
if ($ForcedSignatureReplyForward -eq '1')
{
#Set company signature as default for Reply/Forward messages
$MSWord = New-Object -com word.application
$EmailOptions = $MSWord.EmailOptions
$EmailSignature = $EmailOptions.EmailSignature
$EmailSignatureEntries = $EmailSignature.EmailSignatureEntries
$EmailSignature.ReplyMessageSignature=$CompanyName
$MSWord.Quit()
}

#Copying signature sourcefiles and creating signature if signature-version are different from local version
$FileExists =  Test-Path "$LocalSignatureFile"
if ($SignatureVersion -eq $SigVersion -And $TelephoneNumberREG -eq $ADTelePhoneNumber -And $DisplayNameREG -eq $ADDisplayName -and $FileExists -eq $true) {}
else
{
#Copy signature templates from domain to local Signature-folder
Copy-Item "$SignatureSourceFiles\*" $LocalSignaturePath -Recurse -Force

$ReplaceAll = 2
$FindContinue = 1
$MatchCase = $False
$MatchWholeWord = $True
$MatchWildcards = $False
$MatchSoundsLike = $False
$MatchAllWordForms = $False
$Forward = $True
$Wrap = $FindContinue
$Format = $False

#Insert variables from Active Directory to rtf signature-file
$MSWord = New-Object -com word.application
$fullPath = $LocalSignaturePath+'\'+$CompanyName+'.docx'
$MSWord.Documents.Open($fullPath)

$FindText = "TelephoneNumber"
$ReplaceText = $ADTelephoneNumber.ToString()
$MSWord.Selection.Find.Execute($FindText, $MatchCase, $MatchWholeWord,    $MatchWildcards, $MatchSoundsLike, $MatchAllWordForms, $Forward, $Wrap,    $Format, $ReplaceText, $ReplaceAll    )

$FindText = "DisplayName"
$ReplaceText = $ADDisplayName.ToString()
$MSWord.Selection.Find.Execute($FindText, $MatchCase, $MatchWholeWord,    $MatchWildcards, $MatchSoundsLike, $MatchAllWordForms, $Forward, $Wrap,    $Format, $ReplaceText, $ReplaceAll    )

$MSWord.ActiveDocument.Save()
$saveFormat = [Enum]::Parse([Microsoft.Office.Interop.Word.WdSaveFormat], "wdFormatHTML");
[ref]$BrowserLevel = "microsoft.office.interop.word.WdBrowserLevel" -as [type]

$MSWord.ActiveDocument.WebOptions.OrganizeInFolder = $true
$MSWord.ActiveDocument.WebOptions.UseLongFileNames = $true
$MSWord.ActiveDocument.WebOptions.BrowserLevel = $BrowserLevel::wdBrowserLevelMicrosoftInternetExplorer6
$path = $LocalSignaturePath+'\'+$CompanyName+".htm"
$MSWord.ActiveDocument.saveas([ref]$path, [ref]$saveFormat)

$saveFormat = [Enum]::Parse([Microsoft.Office.Interop.Word.WdSaveFormat], "wdFormatRTF");
$path = $LocalSignaturePath+'\'+$CompanyName+".rtf"
$MSWord.ActiveDocument.SaveAs([ref] $path, [ref]$saveFormat)

$saveFormat = [Enum]::Parse([Microsoft.Office.Interop.Word.WdSaveFormat], "wdFormatText");
$path = $LocalSignaturePath+'\'+$CompanyName+".rtf"
$MSWord.ActiveDocument.SaveAs([ref] $path, [ref]$saveFormat)

$path = $LocalSignaturePath+'\'+$CompanyName+".txt"
$MSWord.ActiveDocument.SaveAs([ref] $path, [ref]$SaveFormat)    #::wdFormatText)
$MSWord.ActiveDocument.Close()

$MSWord.Quit()

}

#Stamp registry-values for Outlook Signature Settings if they doesn`t match the initial script variables. Note that these will apply after the second script run when changes are made in the "Custom variables"-section.
if ($ForcedSignatureNew -eq $ForceSignatureNew){}
else
{Set-ItemProperty $CompanyRegPath'\Outlook Signature Settings' -name ForcedSignatureNew -Value $ForceSignatureNew}

if ($ForcedSignatureReplyForward -eq $ForceSignatureReplyForward){}
else
{Set-ItemProperty $CompanyRegPath'\Outlook Signature Settings' -name ForcedSignatureReplyForward -Value $ForceSignatureReplyForward}

if ($SignatureVersion -eq $SigVersion){}
else
{Set-ItemProperty $CompanyRegPath'\Outlook Signature Settings' -name SignatureVersion -Value $SigVersion}

#проверить актуальность тел. номера
if ($TelephoneNumberREG -eq $ADTelePhoneNumber){}
else
{Set-ItemProperty $CompanyRegPath'\Outlook Signature Settings' -name TelephoneNumber -Value $ADTelePhoneNumber}
if ($TelephoneNumberREG -eq $ADTelePhoneNumber){}
else
{Set-ItemProperty $CompanyRegPath'\Outlook Signature Settings' -name TelephoneNumber -Value $ADTelePhoneNumber}

#проверить актуальность ФИО
if ($DisplayNameREG -eq $ADDisplayName){}
else
{Set-ItemProperty $CompanyRegPath'\Outlook Signature Settings' -name DisplayName -Value $ADDisplayName}
if ($DisplayNameREG -eq $ADDisplayName){}
else
{Set-ItemProperty $CompanyRegPath'\Outlook Signature Settings' -name DisplayName -Value $ADDisplayName}