First, consider on-prem vs cloud app functionality Many on-prem apps have features that don't yet (or may never) exist in their cloud counterparts. For example, the Jira cloud version of Structure is gaining new functionality all the time, but still lacks a few features that some organizati...
https://support.atlassian.com/jira-cloud-administration/docs/import-data-from-a-csv-file/ Are you migrating to Jira Data Center (self-hosted) or Jira Cloud (software-as-a-service)? If there is not already a comparable field in Jira for the custom attributes you have in RTC you will need...