Update Status of an Order on Prestashop using Webservices

I just want to update the current_state of an order,

<prestashop xmlns:xlink="http://www.w3.org/1999/xlink"><order><id>1</id><current_state>1</current_state></order></prestashop>

But the prestashop is asking me for all the mandatory fields of a Post when I use the put,

I tried using the exact same information than the put but it's loosing the total ammounts when I do the put,

Is there something wrong on prestashop architecture?