diff --git a/SharePointFunctions.ps1 b/SharePointFunctions.ps1
index 9a01f37..7ee15ab 100644
--- a/SharePointFunctions.ps1
+++ b/SharePointFunctions.ps1
@@ -420,16 +420,31 @@ function Convert-Files {
             # Download the file from SharePoint
             $downloadPath = "$env:TEMP\$originalFileName"
             try {
-                # Extract DriveId and ItemId from the originalPath
-                if ($originalPath -match "drives/([^/]+)/items/([^/]+)") {
-                    $driveId = $matches[1]
-                    $itemId = $matches[2]
-                } else {
-                    throw "Could not extract DriveId and ItemId from OriginalPath"
+                # Get the site first
+                $site = Invoke-MgGraphRequest -Method GET -Uri "https://graph.microsoft.com/v1.0/sites/sutterhill.sharepoint.com:/sites/tax" -ErrorAction Stop
+                
+                # Get the drive
+                $drives = Get-MgSiteDrive -SiteId $site.id
+                $libraryName = if ($script:txtProdLib.Text -eq "Shared Documents") { 
+                    "Documents" 
+                } else { 
+                    $script:txtProdLib.Text 
+                }
+                $drive = $drives | Where-Object { $_.Name -eq $libraryName }
+                
+                # Get the file path relative to the library root
+                $relativePath = $originalFileName
+                if ($script:txtFolder.Text) {
+                    $folderPath = $script:txtFolder.Text.Replace("/sites/tax/Shared Documents/", "").TrimStart("/")
+                    $relativePath = "$folderPath/$originalFileName"
                 }
                 
+                # Construct the download URI
+                $encodedPath = [System.Web.HttpUtility]::UrlEncode($relativePath).Replace("+", "%20")
+                $downloadUri = "https://graph.microsoft.com/v1.0/drives/$($drive.Id)/root:/$encodedPath:/content"
+                
                 # Download the file
-                $fileContent = Invoke-MgGraphRequest -Uri "https://graph.microsoft.com/v1.0/drives/$driveId/items/$itemId/content" -Method GET -OutFile $downloadPath
+                Invoke-MgGraphRequest -Uri $downloadUri -Method GET -OutFile $downloadPath
                 if (-not (Test-Path $downloadPath)) {
                     throw "Failed to download file from SharePoint"
                 }
@@ -475,9 +490,9 @@ function Convert-Files {
 
             # Upload the converted file to SharePoint
             try {
-                # Get the Drive ID and destination folder
+                # Get the destination folder
                 $destinationFolder = $script:txtTempLib.Text
-                $uploadUri = "https://graph.microsoft.com/v1.0/drives/$driveId/root:/$($destinationFolder)/$($xlsxFileName):/content"
+                $uploadUri = "https://graph.microsoft.com/v1.0/drives/$($drive.Id)/root:/$($destinationFolder)/$($xlsxFileName):/content"
                 
                 # Read the file content
                 $fileContent = [System.IO.File]::ReadAllBytes($xlsxPath)