-files have been successfully transfered (for example by moving directories
-around and removing the old directory). This option increases the
-usefulness of --partial because partially transferred files will remain in
-the new temporary destination until they have a chance to be completed.
-If DIR is a relative path, it is relative to the destination directory.
+files have been successfully transferred (for example by moving directories
+around and removing the old directory, although this requires also doing
+the transfer with -I to avoid skipping files that haven't changed). This
+option increases the usefulness of --partial because partially transferred
+files will remain in the new temporary destination until they have a chance
+to be completed. If DIR is a relative path, it is relative to the
+destination directory.