I am using the REST API directly through a custom backbone sync adapter, is there some other magic I should be doing. thanks

Oh, my apologies I read your initial post incorrectly. Can you provide a code snippit in which you are re-serializing the object? Feel free to send the code to damien@kinvey.com if you don't trust putting it up here. Thanks,

I am aware of that... so this doesnt answer my question at all; I am stating that I do not see an updated date returning from the save

Aaron: The LMT is set automatically by mongo when you write to the database, as it is the last modified time of the object. Thanks,