Quick Term isn't working for NO>EN

Hi, I have an NNNO>ENUS project, for which I've completely rebooted everything from the template to the termbase to the translation memory all to make sure everything was NNNO>ENUS and for some reason when I click "add quick term" it adds the target term *ENUS), but not the source term. Can someone please help - this LP always worked before and suddenly stopped.