Employer Roth 401(k) contributions were not permitted before 2024, so any employer contributions made for years prior to 2024 were required to be made to the traditional 401(k) account. If you did not explicitly request that the employer contribution for 2024 be made to the Roth account, it too would have been made to the traditional 401(k) account. Did you move only the Roth 401(k) account and left your traditional 401(k) account in place? That would explain receiving only a code-H From 1099-R. If the traditional 401(k) account was moved, you would have received a code-G From 1099-R. Or perhaps you did move the traditional 401(k) account and you also received a code-G Form 1099-R that you haven't mentioned.
