Unmapped comments problem

Hi, everybody. I have a small problem. So I exported a new link for a project. Then my client commented on this link. Then I made changes to that xd document and saved it with a new name. At this time I could not update on the old link changes. Therefore, I copied and pasted the new changes to the previous xd document and updated them on the old link. At this time I had such a problem - "Unmapped comments"(in attachment). Old comments are read, but you can't see which comment is on which page. When you clicked on it earlier, that page would open. How can I do that?

Thanks in advance.