README.md in closure_tree-6.1.0 vs README.md in closure_tree-6.2.0

@@ -466,10 +466,15 @@
 
 Yup! [Ilya Bodrov](https://github.com/bodrovis) wrote [Nested Comments with Rails](http://www.sitepoint.com/nested-comments-rails/).
 
 ### Does this work well with ```#default_scope```?
 
-No. Please see [issue 86](https://github.com/mceachen/closure_tree/issues/86) for details.
+**No.** Please see [issue 86](https://github.com/mceachen/closure_tree/issues/86) for details.
+
+### Can I update parentage with `update_attribute`?
+
+**No.** `update_attribute` skips the validation hook that is required for maintaining the 
+hierarchy table.
 
 ### Does this gem support multiple parents?
 
 No. This gem's API is based on the assumption that each node has either 0 or 1 parent.