I am migrating a Wordpress (2.5) blog to Movable Type 4. Export from WP and import into MT4 went smoothly.

The blog is currently at www.dianacamera.com at Anhosting.com (midphase.com). I imported it to MT in a subdirectory under one of my other websites at pair.com, and will eventually transfer dianacamera.com domain from my Anhosting.com account to pair.com.

How do I keep my original permalink URLs? I was using the default Wordpress permalink setup, which looks like:
www.dianacamera.com/?p123, where the number 123 was the post ID number.

Is there a way of keeping my original permalinks during the import? How do I do that?