Translation of bilingual XML files with target already generated (partially) using Trados Studio | This blog post may help you

Forum: SDL Trados support
Topic: Translation of bilingual XML files with target already generated (partially) using Trados Studio
Poster: NeoAtlas
Post title: This blog post may help you

I think this post from Paul Filkin will help you solve your problem:

[url removed]

Good luck!

… Jesús Prieto …