diff --git a/lib/active_hash/base.rb b/lib/active_hash/base.rb
index cdede86a..39c476a8 100644
--- a/lib/active_hash/base.rb
+++ b/lib/active_hash/base.rb
@@ -108,9 +108,7 @@ def data
       end
 
       def data=(array_of_hashes)
-        mark_dirty
-        records.clear
-        reset_record_index
+        delete_all
         self._data = array_of_hashes
         if array_of_hashes
           auto_assign_fields(array_of_hashes)