How about creating some plugin function that can import stuff directly from Schlu Eventlist?
Hehe, I have just gone through a nightmare of manualy getting all the locations plotted over from Schlu to Matukio... and hehe, that was not a nice job.
Just thinking that a lot of people used Schlu, and I recon they still do. I have been using it for years, so my database from it was pretty big. Ok, I didn't bother transferring it all... but you get the point.