restore.md in imap-backup-9.0.0.rc1

- old
+ new

@@ -23,8 +23,6 @@
 Emails are identified by folder and a specific email id. Any email that
 is already on the server is skipped.
 
 ## How do I restore to a different service?
 
-1. Run setup and add the new server, (but don't run any backups),
-2. Rename of the existing backup directory to match the new email address,
-3. Run the restore.
+It is best to use the `migrate` command in this case.