Different Style for Advanced Layout Editor

Dear Kriesi Team

I have a problem with a Blog Post:

I had switched from “default editor” to “advanced layout editor”. But now the styling of the page is different from the standard layout in blog posts (see two links above). Among other: Titel formate is different / Category above Title is missing.

I would like to just switch back to “default editor” but it doesn’t let me do this. I only get a blank page if I do this :( Do you know how I can switch back to default editor without loosing all content?

Thanks,
R