Hi,
I'm trying to flatten a digitally signed pdf document with Spire.PDF but after opening the flattend (and saved) pdf my signature disapeared completly (I'm trying to preserve the signature image only).
I've tried the usual pdf.Form.IsFlattened = true from your example, and also iterated through all PdfFields via using the PdfFormWidget.FieldWidget.List setting the Flatten property manually.
Please explain why my signature get's removed here and if there's a possibility to circumvent this behaviour.
Best regards,
Lennart