Because RMDs were waived for 2020, no distribution made in 2020 is an RMD even though the distribution might have been originally intended to be an RMD. Because TurboTax only permits amounts in excess of an RMD to be reported as rolled over, you must indicate to TurboTax that the none of the distribution was RMD.
In 2009 when RMDs were similarly waived, the developers changed 2009 TurboTax step-by-step mode to automatically indicate that none of the distribution was RMD. It's likely that the developers will eventually do so again in 2020 TurboTax, but in the mean time you can produce the exact same result by explicitly indicating that none of the distribution was RMD.
