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Admin Kit doesn’t store the backup data per se. It just automates the site backup according to the schedule and only holds the backup URL. The products (Jira and Confluence) keep the actual backup data. For more details, refer to the product documents:
Jira: export data - the file size is
N/A(not available) due to the product constraintConfluence: create a site backup
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Most likely, yes; however, it depends on how the add-on apps are implemented. So we highly recommend reaching out to the app vendor to ask if whether your app data is restorable with the product backup.
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