Converting Ink to Base64 and then to Image gets shapes cropped - vb.net

Question

I am using the function below to convert some ink shapes I have drawn on a picturebox control to Base64
Function GetBase64(ByVal InkCollector As InkCollector) As String
Dim utf8 As UTF8Encoding = New UTF8Encoding()
InkCollector.Enabled = False
Return utf8.GetString(InkCollector.Ink.Save(PersistenceFormat.Base64InkSerializedFormat, CompressionMode.Maximum))
InkCollector.Enabled = True
End Function
I can then use the string to reproduce the sketch into a new image by feeding it to this function:
Function Base64toImage(ByVal Base64 As String) As System.Drawing.Image
Dim utf8 As UTF8Encoding = New UTF8Encoding()
Dim imgSig As System.Drawing.Image
Dim tmploadedInk As Ink = New Ink()
Dim strGIF As String
Dim imageBytes() As Byte
Dim MS As MemoryStream
'Load the Base64 String in Format(PersistenceFormat = Base64InkSerializedFormat) as ink
tmploadedInk.Load(utf8.GetBytes(Base64))
'Convert the ink to Base64 String in format (PersistenceFormat.Gif, CompressionMode.Maximum)
strGIF = Convert.ToBase64String(tmploadedInk.Save(PersistenceFormat.Gif, CompressionMode.Maximum))
'Convert Base64 String to Byte Array
imageBytes = Convert.FromBase64String(strGIF)
MS = New MemoryStream(imageBytes, 0, imageBytes.Length)
' Convert byte[] to Image
MS.Write(imageBytes, 0, imageBytes.Length)
imgSig = Image.FromStream(MS, True)
Return imgSig
End Function
This works fine except for the fact the shapes are cropped and therefore they get aligned to the top left corner of the generated image. If I use a line of code like below:
PictureBox1.Image = Signiture.Base64toImage(Signiture.GetBase64(Sketch_InkCollector))
The shapes appear at the top left and ignore the fact that they might have been drawn at the center of the original picture box. I believe that the positioning data is being properly saved into the Base64 string, but are somehow being ignored when the shapes are transferred to the image variable. The reason I believe this is because when I use the function below with the Base64 string, the shapes get placed properly in their original position.
Sub SetBase64PictureBox(ByVal InkCollector As InkCollector, ByVal PictureBox As PictureBox, ByVal Base64 As String)
Dim loadedInk As Ink = New Ink()
Dim utf8 As UTF8Encoding = New UTF8Encoding()
InkCollector.Enabled = False
InkCollector.Ink.DeleteStrokes() ' Clear all strokes
loadedInk.Load(utf8.GetBytes(Base64))
InkCollector.Ink = loadedInk
InkCollector.Enabled = True
PictureBox.Invalidate()
End Sub
Thank you
Update:
Found a temporary solution in this link:
InkPicture control - How to save both ink and image to an image file
It is not exactly what I was after but the end result is the same since I wanted to the combined picture and the ink strokes into an image to show in a PDF file.