Is there a difference between a Traditional IRA, Rollover IRA and Traditional Rollover IRA account at Interactive Brokers?

Yes, IBKR supports internal funds or position transfers for IRA accounts with a matching Account Type, Account Title, and tax ID. The IRA accounts need to be the same type of IRA (ie. traditional/traditional or Roth/Roth) in both accounts. 

Request may be submitted within Client Portal:…

To transfer a Rollover IRA to a Traditional IRA with IBKR you will need to set up an ACAT transfer in Client Portal. When setting up the ACAT transfer, you will need to select Traditional as the account type as Traditional and Rollover are considered the same for transfer purposes…

The recharacterization of IRA contributions is a change of the annual contribution made to a Traditional or Roth IRA into the other IRA type. This includes the designation of a contribution plus earnings from one IRA type into the other IRA type.

Recharacterzied contributions do not include Roth Conversions or Rollovers…

ROLL 401K INTO ROLLOVER IRA ACCOUNT

Yes, you can use an existing Rollover IRA account:…