I want to ignore the stiffness of certain members during analysis but want the loads applied on them to be transferred to the structure. Can I use the INACTIVE MEMBER command for this?
Loads defined on inactive members are not considered in analysis. If you are trying to ignore the stiffness of the members, you may consider defining a dummy material for these members with low E value so that the stiffness contribution from these members become negligible. That way loads applied on these members are still going to get transferred to the rest of the structure.