Hello Spandan,
I have the same problems using the HANA Tools 2.2.8 in combination with HANA revision 102.3. For me it seems to be a bug in the HANA tools, but I didn't find any correction note or recommendation so far.
What works for me is following:
- Use the HANA web development workbench. Here the modeling feature works w/o issues.
- In the HANA Studio (or Eclipse with HANA Tools) it works for me when I add the tables/views/... to the data found or projection nodes in calc. views, save, close the view and reopen it. After reopening it the columns appear.
Best Regards,
Florian