Business & farm

I have a 1099R for an NUA distribution of a 401K.  Box 1 includes the total of all the stock (NUA), and the Cash  non NUA part of the distribution (mutual funds cashed out).  Box 2a includes only the Cash amount, box 6 includes only the NUA (stock) amount.

From reading these answers, I assume I only have to input the amount in box 2a and do not even need to report box 6.  So the only data I enter is box 2a . Is this correct?  It just does not feel correct to not report box 6.

Thank You.