Jira Core upgrade and helpdesk recovery

At the global ICT provider Apelby Communications, I helped resolve a situation where a critical field had disappeared from their Jira instance. This field connected to a local database via the Elements app, and provided data to other add-ons such as Email This Issue or Scriptrunner. Without it, the whole helpdesk had stopped functioning. However, I managed to recover this complex integration, migrated Apelby Jira to a new server, and upgraded it to the newest version, so the company was able to enjoy the features of the updated system.