It’s not a big deal , it involves Stairs’s that land on existing landings , I like to place my stringer on top of the landing and notch the bottom around the landing so once in place it can’t go anywhere. , 
I thought one of the selling features in stairdesigner 6 was that it worked well with other Cad programs , I remember seeing some video’s Ness did where he did just that and brought the changes back to stairdesigner For processing! Am I wrong.