Except that nothing is going away. We did the same, migrate from PD to OpsGenie. As soon as they offered to use JSM instead, we tried it and it’s great. Only one mobile client for everything, all old OpsGenie integrations just keep running, you still have heartbeats. JSM is the same product, just integrated into Jira. If you have OpsGenie running, migrating to JSM is just the push of a button.