No sorry, but I'm sure I did not do that.
I found the "data.js" in the exportet project, but I can not read everything exactly.
https://www.dropbox.com/s/rq8jlai1whefr ... .json?dl=0
I saw that I used 3 different layers. One layer called "Lights" (Position 4), another layer "Shadows" (Position 3) and a third layer called "Lightmap" (Position 2). But I can not read all the settings of the layer. Maybe a developer of C2 can help me. Too bad that can't easily convert exported projects.