we using remoting_api. We call client_update in order to add a template_additional to a client, and it works. but i believe that it doesnt update the table client_template_assigned. for this reason at the next call of client_update to add another template_additional to same client the second template take the place of first one since the first one is not memorized. Is there a call to update also client_template_assigned table or something that would update also this table when adding an addon template via api call?