We have just finally upgraded from Jira Sever 8.5.5 and Advanced Roadmaps 3.2.9 to Jira Data Center 8.18. The Advanced Roadmaps plugin is still installed.
Is there anything I need to do to safely, without losing all the work done setting up our hierarchy and plan, switch to using the 8.18 built-in Roadmaps?
Should I just uninstall the plugin?
Is this something I should plan to do outside prime business hours?