How to marge Document in .NET

Hello,

I’m trying to marge word documents using .NET and aspose library.
I use this method:
public void AppendDocument(Document srcDoc, ImportFormatMode importFormatMode);

My problem is that the documents are merged but with no difference between documents.
My result is this one:
a.png (131.2 KB)

But I would like have this one:

b.png (46.9 KB)

Can somebody say to me that I am wrong?

BR

Alessandro

@alessandrorappini Could you please attach your input, output and expected output documents (as MS Word documents not screenshots) here for our reference? We will check the issue and provide you more information.