macuser, YES, the interveiw mode fixed it! Exactly as you said. Now 16a shows "0" and 16b shows 20k with "ROLLOVER".
(The only question I felt a bit uncertain about is the "Distribution Source" with a list of public plans/authorities,etc. I could not find 403b anywhere, and just contiuned with the default choice "None of above (select for 457h)". I assume the main thing is for IRS to see that the 20k is reported as taxable, just as shown in hardcopy 1099-R".)
Once again, many thanks for going out of your way to help out.
