Should “ IRA, 401(k), Pension Plan Withdrawals (1099-R)” totals reflect only the RMD if no other transactions were involved?

[g_herbel]

What if RMD checks were sent but I did not cash them - are theses still taxable in 2019?

[dmertz]

Once you had the checks in hand, you had constructive receipt of the distribution whether or not you cashed the checks.  The distribution(s) are reportable by entering the Form(s) 1099-R into TurboTax.