No, CAESAR II will do this for you, that is the purpose of defining the "Static Load Case for Non-Linear Restraints". CAESAR II looks at the results from this load case and performs the linearization for you. So if a +Y lifted off in the case you select, CAESAR II will remove it from the model for the dynamic run. If a gap closes, CAESAR II will take the gap out completely for the dynamic run. If the gap didn't close, CAESAR II will take out the restraint for the dynamic run.