confused about mq

[Neal Becker]

I'm trying out mq, but I'm confused.

I imported a cvs archive with tailor.
Then I cloned it.
Then I modified some files, and used mq.  Here's the situation:
hg qapplied
ublas
mt_serialize

There are 2 changesets applied.  Now, I want to get ordinary patches for
these changesets.
hg log
changeset:   4:3bed270c174c
tag:         qtip
tag:         mt_serialize
tag:         tip
user:        ndbecker2 at gmail.com
date:        Wed Nov 01 20:18:28 2006 -0500
summary:     imported patch mt_serialize

changeset:   3:f624131cc78d
tag:         ublas
tag:         qbase
user:        ndbecker2 at gmail.com
date:        Wed Nov 01 20:18:27 2006 -0500
summary:     imported patch ublas

changeset:   2:67ea41d92590
user:        nbecker at localhost.localdomain
date:        Tue Oct 31 11:21:22 2006 -0500
summary:     hg patches saved state

changeset:   1:4b054c84c6ed
user:        nbecker at localhost.localdomain
date:        Tue Oct 31 11:18:39 2006 -0500
summary:     patch queue: mt_serialize

changeset:   0:cdcc3566179f
user:        nbecker at localhost.localdomain
date:        Tue Oct 31 11:17:14 2006 -0500
summary:     patch queue: ublas

So, what is mt_serialize changeset?
hg export mt_serialize
# HG changeset patch
# User ndbecker2 at gmail.com
# Date 1162430308 18000
# Node ID 3bed270c174ce76e0c7c990b14e616ae9887bc14
# Parent  f624131cc78d7dc505cd79d636fac914fd4eaad1
imported patch mt_serialize

Where's the patch?  What am I doing wrong here?