For the purposes of this question, assume Russia's Multipurpose Laboratory Module (MLM/Nauka) gets launched and makes it to the ISS.
Most articles I read say the MLM will dock at the FGB's nadir port (for example, the confusingly written Wikipedia page) At first writing of this question, I thought the DC-1 had been discarded as planned. No, it hasn't. I find the whole situation very difficult to sort out.)
What is the plan for MRM assuming the MLM is to replace it at the FGB nadir port?