Account types must be the same in order to rollover assets; for example, if the originating account is a Roth IRA, your IB account must also be a Roth IRA. Direct Rollover – A transfer of funds from a qualified plan (pension, 401 (k) or other qualified retirement plan) with an employer to an IB Traditional IRA account.
https://www.interactivebrokers.com/en/trading/ira-information.php