When you perform a Structure Backup, you have the option to include your Gantt charts and data in that backup. To include Gantt data, select the Backup Structure.Gantt option.
When you include Structure.Gantt in a backup, the following information is saved:
Gantt configurations
Values and dependencies stored in the Gantt charts
When migrating Structure data from one on-prem instance to another, in order to include Gantt data, you need to select the Restore Structure.Gantt app data option.