Be able to change existing Metrics types (Connected/Calculated/Manual)

It is very important to be able to change the type of Metric used in a Metric tree as a lot of customers start building Metrics and Metric trees with Manual Metrics but then want to connect those to an excel for example without destroying the full Metric tree and needing to recreate the Submeasures in the plan. Being able to easily change the type from existing Metric would make life much much easier and avoid a lot of duplication of effort. (Creatint then deleting and recreating at a Metric level and Measure and submeasure level).