One-stop migration applies to scenarios where multiple servers need to be migrated. You can use RDA to install the SMS Agent on source servers and create migration tasks in batches.
One-stop migration supports only servers discovered and collected by RDA. To migrate servers that are not collected by RDA, such as, servers where the Agent is manually installed, see Regular Migration.
If the Agent has been installed on a server, uninstall the Agent first before performing a one-stop migration.