Why can't I open my levels in version 4.5

I say open level, and get a screen showing the content browser files. I liked the old system better. Now I can’t open my level, since my level is not in the content.

please help, my default map is super lame.

I have the same problem.

I had this issue as well. I was able to get around it by setting my level as the Editor Default Map/Game Default Map under Project Settings > Maps & Modes. I was able to select my level from the drop-down menu even though it wasn’t in the Content Browser.

Thanks . I really needed the help.