The new Atlassian App Migration Platform (currently under development) will enable all Atlassian Marketplace Partners apps to build automated migration paths for their apps.
When a customer migrates projects from Confluence Server / Data Centre to Confluence Cloud using the Confluence Cloud Migration Assistant, the app migration platform will coordinate with Bob Swift Atlassian apps to automatically move Confluence CLI Confluence data associated with the migrated instance.
This migration path already works out of the. box. Please see https://bobswift.atlassian.net/l/c/13PxxNMm.