I have a project in JIRA v7.6.3 which was created as a KanBan project. I now want to use the sprint field so I can include tickets in other, Scrum-based projects. However, the Sprint field is locked and not available to populate. I'm assuming this is because the project was created using KanBan templates.
I have tried changing all the config schemes on this project to schemes that I used in Scrum-based projects, but nothing seems to allow the Sprint field to be populated. I can't see a way to Edit at the project-level, to change 'KanBan' to 'Scrum' because it's just stored as a "Software" project and nothing more specific.
I don't want to re-create the project and have to migrate the tickets. Is there a way to change the settings or the configuration to make the Sprint field available?