The code G Form 1099-R is indeed reporting the In-plan Roth Rollover. Answer Yes.
This is not a rollover to a Roth IRA. Answer No.
If you made after-tax contributions to the traditional account in the 401(k), answer Yes. However, unless box 2b Taxable amount not determined is marked, the Form 1099-R should already have in box 2a the correct taxable amount and in box 5 the portion of the distribution that is nontaxable due to being attributable to your after-tax contributions.
