Create a way to migrate comments from one site to another

Even though I managed to finally move Intense Debate Comments from blogspot to wordpress, I have lost all threading and rating and the like. I think this will also happens if anyone decides to move domains or platforms since the permalink structure will likely change.
So I'm thinking it would be a good idea for you guys to have some way that people can take the IDC comments of a site, as they are, and move them to another domain or permalink structure, thus avoiding any importing/exporting procedures

So, say for example that I moved from dbzer0.blogspot.com to dbzer0.com. my permalinks changed from dbzer0.blogspot.com/2008/08/blah.html
to dbzer0.com/blog/blah

I could edit my IDC setting for that blog and update the permalink and domain settings to show IDC what my new format it. Then I just install the IDC plugin in my new blog and all my comments show as before.

This is probably not something easy to implement but it would be very very useful.