This document discusses recommendations for migrating process templates in Team Foundation Server (TFS). It recommends trial upgrades when migrating large team projects or integrating with the TFS integration platform. The document outlines steps to prepare for an upgrade by identifying legacy fields and customizations, then adding old fields to new work item types. It describes using work item type definition renames to initialize template parity when upgrading and importing a new process, with options to update queries, reports, and SharePoint or migrate data to new fields after the upgrade.