I am no WP expert but I think you can accomplish what you want to do via Page templates – i.e. add the '<?php comments_template(); ?>v' line to a specific page template called “page-comments” and use that for pages you want comments to show up for.
Hope this helps.
So no fix for this? What did you end up doing?
I need this feature too – I want to switch to a new domain name but don’t want to go through the trouble of reconfiguring everything.. It’d be much easier just to change the mapping.