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The "All reviews" tab in Translate provides a great an overview of all recently published reviews including the most recent version number. It also indicates the version number most recently translated (if at all).
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To update the previous translation, send the review to Phrase by clicking on the "Send to Phrase" button (if it hasn't been sent automatically already).
In Phrase, apply the Translation Memory to the translation file to use utilise existing translations. To do this select the translation file and click on "Pre-translate".
Then proceed with the regular translation process in Phrase.
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