I have 25 hostgroups. Any of it have templates, any have hosts and any is empty. When i try to get info about hostgruop or try to add hosts to hostgroups, i see error or empty strings.

For example on python:
"...
print zapi.hostgroup.get({ "filter":

{ "groupid":'39' }

, "output": "extend" })
print zapi.hostgroup.get({ "filter":

{ "groupid":'44' }

, "output": "extend" })
print zapi.hostgroup.get({ "filter":

{ "name": 'Discovered hosts' }

, "output": "shorten" })
print zapi.hostgroup.get({ "filter":

{ "name": 'Templates' }

, "output": "shorten" })
..."
In output i see this shit:

[

{u'internal': u'0', u'groupid': u'39', u'name': u'Nonexistent Ltd_Velikiy_Novgorod_\u0412\u0435\u043b\u0438\u043a\u0438\u0439 \u041d\u043e\u0432\u0433\u043e\u0440\u043e\u0434'}

]
[]
[]
[

{u'groupid': u'1'}

]

Why i can't get groupid 44 and Discovered hosts? All of it exist in my web interface!