I would like to seek for assistance. I have created a schedule but my boss ask me to prepare a one-month ahead schedule from the original schedule I have created to be provided to subcontractors. My problem is I have tried to do it using global change but everytime I press F9 it returns to original schedule I have created not making it one-month ahead. I have also tried to change the start date from project overview but nothing happens. The schedule have some constraint dates. Thank you very much!