I forgot another aspect of migrating: After all that time and money and energy (including opportunity cost of taking people from other productive work), what do

I forgot another aspect of migrating: After all that time and money and energy (including opportunity cost of taking people from other productive work), what do you have to show for it? Another directory services / management system that does the same thing as - or likely worse then - the original. All that work and at best you haven't moved an inch forward, you haven't helped the business' bottom line ... what did you do? How do you explain that to the CEO?