Today I learned that you can actually lose code in Pharo because the record is not always added to the changes file. Also using the tool is quite a lot of pain, so if you want to recover your changes you have to do a lot of archaeology. I've added several issues and marked most of them as '2 - Really Important', because I think they are (especially for students etc that like to break things), but maybe you don't want it for Pharo 5. https://pharo.fogbugz.com/f/cases/17840/ChangesBrowser-selectAll-DNU https://pharo.fogbugz.com/f/cases/17841/Creating-a-class-from-a-debugger-dur... https://pharo.fogbugz.com/f/cases/17842/Recover-lost-changes-doesn-t-recover... https://pharo.fogbugz.com/f/cases/17843/Changes-Browser-doesn-t-recover-chan... Peter