In the current version of Robot the import of non linear combinations to the RC Wall Design module is not supported. Such request is on the wish list for the next versions.
but i have to change type of analysis from nonlinear to linear
i ask you same question before, and i tried but i cant any new about solution
The possible solution for now is to enter the forces calculated for non linear combinations in the RC Wall module stand alone. Of course I'm aware that this is not the perfect one.