I have been facing the same issue. It's funny how nobody has been able to answer this question in almost an year. I have a csv file which i'm using to create an extract. I've followed same steps twice - Once using Tableau 9.3 to create TDE extract and once using Tableau 10.5 to create HYPER extract. I'm able to see calculated fields in TDE extract but not in HYPER. Does HYPER not allow calculated fields to be stored in the extract? If not, then what's the alternative.