Default [Q] CWM doesn't backup android secure

I am using Xperia J touchwiz rom and the problem is when i do a backup in cwm, it don't backup android secure which is used for apps that saved in sd card. It state that there is no android secure folder im sd card. I look for my other backup it have that android secure rar in it. And when i look in root browser, the folder android secure can be open but there is nothing in it. But I still can see the item in the folder when i use my laptop. Is there any problem or did I'm make a mistake here. can anyone help me. thank you.