I agree it is very strange. I entered my W-2 data by hand. I enter each of the 4 codes C, D, DD and W and their corresponding amounts. I see all 4 lines of entries and then I continue past that section and when I go back C and W are missing. The reason I noticed it was when I was working on the HSA section it was not showing any contributions. When I clicked on the info icon it said that it does not show a contribution because Box 12 needs to completed. When I go back to Box 12 there are only 2 entries D and DD. I can reenter but they don't stay after going past that screen.
