Flex Air: Read the “ActionScript Object” from the file, then click?

This is pretty simple to do, you write the object to a file, then read it:

• http://corlan.org/2008/09/02/storing-data-locally-in-air/
• http://cookbooks.adobe.com/post_Storing_ActionScript_Objects_in_the_Encrypted_Loca-10563.html

My questions

• why when we put [RemoteClass (alias = "foo.Bar")] in VO, it can be (otherwise the type of the deserialized object is the General object with the correct property data inside it)?
• Is there any other way to achieve this without the RemoteClass tag? (Use of metadata is preferred)

thank