Control system migrations have become a common part of life for providers of automation solutions and customers alike. As technology evolves and legacy systems become obsolete the operational security demands of customers determine that migration to a newer platform is required, the path taken depends on several factors. At Edginta we provide start to finish solutions for migrations, it is our belief that the key to any migration is the plan or blueprint. Often the lack of time and effort placed into the plan results in costly choices as it is developed, often over several years or even decades.