You would like to back up your extensions and alt custom artifacts in FAW.

To back up your extensions and all custom artifacts in FAW, you can use snapshots. Snapshots are a feature in FAW that allows you to create a backup of your service instance, including the semantic model, data sets, reports, dashboards, and other analytics content2. You can also restore your service instance from a snapshot if needed3. OAC built-in utilities and FAW bundles are not available for backing up FAW artifacts