Once your integration is setup, you can also sync any of the following Avion elements to a custom field in Jira:
Releases (if not already synced as epic, or already synced as fix versions)
Journeys (if not already synced as epic)
Steps (if not already synced as epic)
To set any of these up, head to the Configuration panel of your Jira integration:
Feel free to setup as many of these as you wish. You can also decide to add these in over time as you require.