I couldn't get this to work.. I've converted "pinetree" model via fragMOTION into mdl5, and this tool says that it's opened and could be reduced. Then I set "Reduction Number" to "2" (I've tried all of the possible values) and "Reduction Level" to "1" (also I've tried all of the possible values) and I press "Reduce" but the amount of vertices and faces are just the same as they were when I just imported model into this tool. And new saved model is just the same as the original. Here is the screen, I've used the max possible values:
I have no idea, why this doesn't work for me, maybe I've made something wrong??