using (Stream stream = File.OpenRead(inputFileName))
{
	PdfFormatProvider provider = new PdfFormatProvider();
	provider.ImportSettings.ReadingMode = ReadingMode.OnDemand;

	RadFixedDocument document = provider.Import(stream);

	document.DocumentUnhandledException += Document_DocumentUnhandledException;

	using (Stream ostream = File.OpenWrite(outputFileName))
	{
		PdfFormatProvider expProvider = new PdfFormatProvider();
		expProvider.ExportSettings.ComplianceLevel = PdfComplianceLevel.None;
		expProvider.Export(document, ostream);
	}
}

private static void Document_DocumentUnhandledException(object sender, DocumentUnhandledExceptionEventArgs e)
{
	if (e.Exception is NotSupportedActionException)
	{
		e.Handled = true;
	}
}