@JamesBurton1, When you deploy a new version of a solution we will never modify or delete items from a previous deployment. In some cases we may reuse items, such as a shared service in a new web map delivered with the update, but we will only create new items. This is to ensure your existing deployment will be unaffected.
In the case of Citizen Problem Reporter v2.0 we updated everything and are deploying a complete new feature service so you will get a new folder in your content with all new items. There will be no shared items between v1.0 and v2.0 and v1.0 will be unaffected while you evaluate v2.0.
