I have a very simple test where I am opening DOCX document. Enable track changes and inserted some text with user comments and saving it. When I try to open the output document some pages are missing.
We have tested the scenario and have managed to reproduce the same issue at our side. For the sake of correction, we have logged this problem in our issue tracking system as WORDSNET-18729. You will be notified via this forum thread once this issue is resolved.
We have good news for you i.e. WORDSNET-18729 has now been resolved. The fix of this issue will be included in the 19.7 (next version) of Aspose.Words. We will inform you via this thread as soon as the next version containing the fix of your issue will be released by the end of current week.