Display of fuzzies in Studio 2015

Hello, I have Studio 2015 and I'm working on a translation project with 4 different TMs and a Termbase. I have set up my project settings as usual and I like to have my two windows open (Concordance search and Translation Results) on top of the segments I'm working on. Usually when I have fuzzies (high or low) I can see on the top in Translation results the similar segment that was translated before with the changes indicated. It helps me to know immediately what terms were added or deleted so I can edit quickly my fuzzies. However this is the first tme it doesn't happen, that is in this project I have fuzzies, however when I look in the window Translation results I have the message "No matches found", as if a similar segment has never been tranlated before. Do you know why ? (All my TMs are ticked for Enabled, Lookup and Concordance and in ProjectSettings/Language/All languages/Translation memory/Search I have set up the minimum match value at the lowest (30)). thanks !