Not sure where you got that info. Muse generates standards based HTML and CSS, you can take the HTML and CSS files and do what ever you want with them. Note, at

Not sure where you got that info. Muse generates standards based HTML and CSS, you can take the HTML and CSS files and do what ever you want with them. Note, at that point your editing code, not visually designing. Even if you've published to Business Catalyst, you can just take your file and export to HTML and CSS later on.