I recently had problems working on a Groupshare project. I completed over 50% of the project and checked it in for my colleague to start work on the other half. When he opened the file it showed as only 40% completed. I opened the file in my account again (not checked out, just for reference) and it still showed 50%. When my colleague checked the file out again and I checked in, it was back to only 40%. Also the sections I had already completed were not recognised by my TM and I had to re-translate them all again. Has anyone had any similar experiences or knows what I did wrong? I'm not an experienced user yet so the more simple the explanation the better - thanks! All suggestions gratefully accepted :-)

(I am using 2017 SR1, my colleague 2015)