Smart class parameters surcharged to specific host export/import


I am in the process of migrating Foreman, but I am encountering an issue. I would like to be able to export/import the user-overridden smart class parameters on a defined host. I have tried several ways with the Foreman API without success. I managed to export using the data from the external node (the YAML via the URL); however, I am unable to re-import the override value on the defined host. Could you assist me with this matter?