Dear community, 
I have seen several posts about this subject, but no solution yet so I thought I bring it up again. I have the issue as several others do, too, in that I can absolutely not rely on the retrofit function to include all the changes that were made in the target translation file. It makes no difference if I give the command from the Home - Batch Task menu or from the Review - Update from reviewed target file menu. I have it over and over that I spend hours manually copying sentence by sentence from the target translation into the Trados editor in order to update my TM. This is pretty frustrating and costly in terms of time, money and nerves. I remember we´ve already had a conversation about this a while ago, Paul. That was in the Studio 2015 version. Sadly, nothing has changed in the 2017 version in that regard. It would be tremendously fantastic if this bug could be fixed :)