Thanks for your reply. Sorry I wasn't clear about the issue earlier. Let me try again:

We created a document that has about 200 comments in it. Using the anonymizing feature, all of the comments are attributed to "Author."

Next, we sent the document outside our organization for review. But, unfortunately, the feature that anonymizes revisions/comments was left ON, so when the reviewer added their comments (they added about 100), they appear as having been created by "Author."

So we have a document with 300 comments, all attributed to "Author," but 100 of them should be attributed to the actual reviewer's name, and I'd like to programmatically differentiate between them so I can change the name from Author to the reviewer's actual name. (Probably the easiest way is to view both documents side by side, to see where new ones were added. This is, of course, a manual process.)

I wasn't able to do a compare in Word of the old and new version such that the reviewer's comments would be revealed. In the old version, if I went into comments.xml and changed "Author" to, say, "Author Internal," upon comparing, the new version would revert these old comments back to "Author."