order edit issue

When I try to edit any order, it shows "no results" or wrong products in products tab. JSON result:
https://xxxxxxxxxxx/admin/index.php?rou ... store_id=0
200 OK
{"products":[],"vouchers":[],"totals":[{"title":"\u5546\u54c1\u7e3d\u984d","text":"\uffe50.00"},{"title"
:"\u8a02\u55ae\u7e3d\u984d","text":"\uffe50.00"}]}

Version: 2.0.3.1
PHP Version: 5.6
Windows Azure
Browser: IE11.0.10011.0/Firefox38.0.5/Opera30.0.1835.59

Can anybody help?