C2C Migration Tool should have a feature to migrate all Dashboards in one go similar to the option available in Server to Cloud migration.

For Server to Cloud (S2C) migration, it is possible to migrate all, dashboard share permissions, gadgets, and gadget user preferences using JCMA, by enabling Dark Feature in Jira according to this article. However the same is not available while performing Cloud to Cloud (C2C) migration feature.

It would be great to see the possible solution for all dashboards, dashboard share permissions, gadgets, and gadget user preference migration with C2C migration.