Hello Oscar,
Thank you for your reply and the solution provided.
I have tried this solution, but it does not help, because when the QA runs the second time, it does not create identical results, thus such compare simply does not work since the documents are different. Word can compare only identical documents.
I think it is more a programming procedure, where the program should check possibly segment IDs or something deeper than a simple compare and bring only unique results when the QA is run the second time.
Thank you!