What version are you running? 2.0.6 What's the URL of the page containing the problem? N/A What steps will reproduce the problem? 1. delete a few lines from a file 2. add the diff to Reviewboard 3. publish the review 4. restore the deleted lines with a few small changes to the lines 5. add the updated diff to Reviewboard What is the expected output? What do you see instead? When I look at the changes between revision 1 and revision 2, I expect to see the restored lines as a change, but instead, Reviewboard shows no changes. If I expand the file, I do see the differences but they are not marked as changes by Reviewboard. What operating system are you using? What browser? $ uname -a Linux 3.13.0-35-generic #62-Ubuntu SMP Fri Aug 15 01:58:42 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux Google Chrome Version 36.0.1985.125 Please provide any additional information below.