No, using an override is inappropriate and unnecessary. You need to remove that override, then simply enter the Form 1099-R as received, indicate that part of the distribution was RMD, indicate the amount that was RMD, then indicate that you moved the money to another retirement account (or returned it to the same account), indicate that you rolled over part of the money, then indicate the amount rolled over. TurboTax will include the entire gross amount on Form 1040 line 4a but will exclude from line 4b the amount rolled over. TurboTax will also include the word ROLLOVER next to line 4b.
