How can I convert a Classic Slideshow to an ordinary notebook?

I have several Classic Slideshow presentations originally created 3 or 4 years ago. I would like to convert these to ordinary Mathematica notebooks, removing all the slideshow-related paraphernalia including page breaks, etc.

If I simply select Format > Stylesheet > Default, the separate slides are still there, labelled “Slide 1 of 34” etc.. Is it then just a matter of manually removing all the page breaks, or is there more to it?

Related to this, (though it’s not what I want to do at present), what is the best way to convert from a classic slideshow to the newer Presentation style? Will Format > Stylesheet > PresenterTools do the job correctly?