更改视图AngularJS时，控制器中的数据列表为空

I don't understand why, but in Angular controller I have list, and if I success save file I want to go to another page and there show list of files which I save. I put name in list and everything is ok, but probably when I change html/root they deleted all list. I use same controller for two html page.I don't understand why, but in Angular controll