As part of my testing this new Fidelity Investments connection type, I've set up a new test datafile using version R64.25 and added my Fidelity accounts that include a 401k from their Netbenefits organization. Unfortunately, there is no provision presented to define this account as either a 401k, Roth 401k, or 403b type account as was available in the past using the direct connection type. I have not seen this problem reported before. Here is the legacy account configuration in Quicken:
Here are the choices presented in R64.25 when adding this account to a new test datafile:
And the only choices once the account is added as "IRA or Keogh Plan":