Here's my scenario, I had a client who had filed their own 1040 SR this year, it needed to be amended, whatever free filing software they used it ended up populating box 4A & 4B (same amounts) in order for me to recreate the tax I had to manipulate lacerte a bit. I ended up using codes 7 (normal distribution) and Q (qualified distribution from a ROTH IRA) - using that code combination will populate boxes 4A and 4B. Not sure if this is any help to you, but in the event you need to recreate a tax like myself this worked