All I am saying is that in my experience, technology seems to rule over the people, and it is not just in the training, but in the confidence of use. You can't buy that. Obviously you have worked with some good staff, and I have too. But I have also worked with a lot of staff who on not just MISs are difficult to work with when it comes to change, even properly handled, and this is ALWAYS overlooked.
Back to the original point, if this needs to be reviewed every year: Ok so if you have decided to move from MIS A to MIS B. You probably have a long period of consultation, staggered change over and trial periods, training etc etc, taking maybe month or years (well suggested by Vik). Each year you need to conduct a thorough review of if this is giving the best ROI. MIS A now, after 1 year, had a whole load of new features, operability, pricing structure. What happens?