We are currently running Jira Server v8.6.1 with ~75 active projects and ~300 active users. The Jira Migration Assistant recommends "Choose what to migrate" but Atlassian recommends a "Lift and Shift" method for communities with less than 10,000 users. We have been running Jira Server for many years and our projects are highly customized. As such, I would prefer to migrate our projects over time as opposed to all at once. That means that we would migrate some projects to Jira Cloud while others continue working in Jira Server until it is their turn to migrate. Repeat until all projects are migrated (probably over the course of a couple months). The documentation suggests that this is possible but has anyone actually done it? If so, did you encounter any pitfalls or regrets about this approach?