I am having trouble with my pushover analysis in ETABS the lines are linear whilst in SAP 2000 I am gaining curves images attached below I AM NOT SURE WHERE I WENT WRONG IN THE MODELLING.https://files.engineering.com/getfile.aspx?folder=aad10be2-2fd1-4aed-9b91-ced35feae4ab&file=Case_1d.EDB