Trados 2017 deleted 50%+ of my translated segments!

How to rescue translated segments lost by Trados?

I've been working on finishing the last 25% of my translation today (of ca. 1400 segments in total). When I was about 80% done, the statistics started to be messed up (the number of untranslated segments was incorrect at 5%), then all remaining segments were filled with the original language translation showing as being translated.

To make the long story short, I reopened Trados and the first 50% of my translation vanished completely.

Is there any way to retrieve it?

More info: 

The issue seems to be a severe glitch in Trados 2017 SP1. 

The newly translated segments (after I press Enter for the latest version SP1, because it is no longer the Ctrl + Enter key combination) they do not appear in the TM files when I open them with Trados. Even if I run (on project, right click) the batch task "Update Project Translation Memories" I get the warning that there is nothing to update, although the contrary is true.

I need some employee from Trados to look at whatever log files are generated, or the whole folder.

I'm now working 16+ hours a day to redo the lost translated segments and meet the deadline. Tremendously frustrating ...