I am unfortunately having the same issue, which I believe may be due to opening a session from Nuendo 4.3, because when I open a session from scratch the offline process history seems to function. This is however not good news for me at all, since I have unfinished SFX editing or Song’s created in earlier versions (Nuendo 4.3 or Nuendo 5.5) that I need to access properly. Please look into this ASAP