You are currently working on UAT 

Creation of a TM for a bilingual sdxliff file

Hello! How to create a TM having only a sdlxliff file already translated (where all segments are in the condition "translation approved")?  What I've already done is to open this file in SDL Trados Studio, create a new project TM for it and try to populate/update it by running Batch tasks (update/populate project Tm), but this TM always results empty, without any TU. What did I miss? thanks