-Virtual guest with active replication cannot currently use online migration.
-Offline migration is supported in general. If you migrate to a node where
-the guests data is already replicated only the changes since the last
-synchronisation (so called `delta`) must be sent, this reduces the required
-time significantly. In this case the replication direction will also switch
-nodes automatically after the migration finished.
+Guests with replication enabled can currently only be migrated offline.
+Only changes since the last replication (so-called `deltas`) need to be
+transferred if the guest is migrated to a node to which it already is
+replicated. This reduces the time needed significantly. The replication
+direction automatically switches if you migrate a guest to the replication
+target node.