Uploading word file in the target language part

Hi, 

I need some help. 

The agency I sent the completed translated file made some corrections and returned it, and I would like to upload this file with the corrections in the target language segment of the project while keeping the source text untouched (if possible), so I do not have to search word after word to complete the corrections in Trados as well. How to do that?

Thank you for your support. 

Best regards, 

Daniela Stankova 

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