SCM products in mainframe environments such as: SERENA ChangeMan ZMF are extremely rich and powerful, which also implies that it isn't obvious to know everything about such product. Even we at AbitMORE, after more then 22 years of working with ChangeMan ZMF (and over 100 manyears of ChangeMan ZMF experience ...), we still learn about new features (so now and then) and/or known issues (aka bugs).