Add the 'translate layout' to the page with outdated phrases. This will make it a lot easier to translate loads of outdated phrases.
In my case I had to review 1000+ outdated phrases. Using this add-on helped me a lot to do it faster and more efficient.

Example output :

Disclaimer :

This add-on has been tested on a standard XF 2.1 (2.1.2) installation with default theme and no add-ons. Although I will try to help you with any problems, it comes 'as is' without any warranties. Always test add-ons before installing them on your production site. I will consider updates and future improvements if needed. Do let me know in this topic.

Télécharger V1.0.0 :

Version 2.0.0 :

Changed name to [OzzModz] Translate Updated Phrases.
Added new developer URL
Added minimum requirement of XF 2.1

Télécharger V2.0.0 :