I checked this problem on this:
{"params": {"options":

{"hosts": "11687"}

, "format": "xml"}, "jsonrpc": "2.0", "method": "configuration.export", "auth": "", "id": 2}
{"params": {"options":

{"templates": "10087"}

, "format": "xml"}, "jsonrpc": "2.0", "method": "configuration.export", "auth": "", "id": 4}
And API don't return data for triggers...