WI Migrator performs a migration of TFS work items environment from a Team Project to another, cross TFS collections / servers. A great solution for migrating between two live TFS environments, including migration to the cloud, from the cloud or between clouds. This tool is similar to WI Migrator, but enables offline migration: provides an export to all work items environment to a local folder, then the user manually copies the export folder, takes the folder to another environment (can be separated), and performs import there.