AT

Documentation to the migration guide is added

Reasoning

Even though migration guide documentation is not a hard requirement due to the reasons described here [1], I think it is not easy for the user to learn about the new features and derive which features cannot be used safely during a rolling update. This is why I tend to mention the feature in the migration guide and the implications.

[1] https://jira.camunda.com/browse/CAM-13410?focusedCommentId=188146&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-188146