Upgrading your Process Template in Team Foundation Server

Upgrading your Process Template in Team Foundation Server regardless of the version is something pretty hard. Think of it like changing your mind on the blueprints of a building after you have finished construction. If you are making a small change, like adding a field, then this will be easy. But if you want to fundamentally change the structure of your work items and their workflow then you are looking at a bigger and much more complicated solution.