Most mainframe application rewrites fail the first time - “Refactoring mainframe applications commonly results in failure on the first try, according to a Forrester survey of over 300 IT professionals commissioned by Rocket Software.” And, from the survey sponsor: ‘“Starting from scratch and rewriting the apps rarely goes well,” Buckellew said. “It can lead to massive cost overruns and it can take years. When you’re in a long rewrite project – that’s when bad things happen and projects get canceled."'