Yes, the G is correct for a direct transfer to either an IRA or a ROTH IRA.
.....but as you have seen, the follow-up questions have to be entered correctly in order for it to be treated properly, as to either as being taxable....or not.
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I had some after-tax contributions made to my 401k (before the Roth 401k existed), and my box 2a was always lower than box 1....such that only the box 2a value was taxed when I direct transferred to a Roth IRA for a couple years running. Fidelity transfer too. All handled OK in the software.
Tested again just now in 2022 Premier Desktop..still works OK.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
