ajax

i'm posting it here because i don't know if it is a bug or just me not doing something correct.
so please be gentle ill except any suggestion.

Created an end point for nodes for GET and update

With simple ajax call i am able to get node data according to its node id.
When i put my node back my CCK Date fields seems to be erased....
But i am able to change all other fields ( title, body, etc...)

how do you send your Date Field correct and way is it not in the same format that i get it from the endpoint ?

I'm using drupal 7 and services 3 using json