Easyblog: Chnage comment system from komento to easydiscuss

I've to change my comment system in easyblog from komento to easydiscuss. As I learned there is no way to import old comments from komento to easydiscuss.

So my question:

Is there a possibility to display komento only with the old articles and to display easydiscuss only with new articles (insert a tag into the old articles) ?

or

Can I display the old comments aside the related article in a module below the article without enabling komento as a second comment system?

Thanx