Save the PDF with comments
You can save a copy of the review PDF that contains all the comments that reviewers have published or that you’ve imported (merged).
If the PDF is in a shared review, you can save an archive copy. The copy is no longer connected to the shared review, and you can edit both content and comments in it.
If you want
to create a copy of a shared PDF to distribute to others, use the
Save As command. The resulting file will include all comments that
were published up to that point, and it can be moved, copied, or
renamed without affecting its connection to the review or to the
comment server. 
To save a copy of a review PDF with all the comments,
open the file, and then do one of the following:-
For a shared review, choose File > Save As Archive Copy, or click the Status button in the document message bar and choose Save As Archive Copy.
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For an email-based review, choose File > Save As to save a new copy of the PDF. This most recently saved version is now the tracked PDF. The old version is the archive copy.
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For a browser-based review, use the Save And Work Offline button in the Comment & Review toolbar to save a copy of the PDF with all the comments to the local hard drive.