SEQUENCES and COPY FROM

In the process of upgrading from 6.1 to 6.3.2+patches at long last.
Just bumped into an interesting
problem with sequences.  With 6.1, you could use sequences with COPY
FROM.  This no longer
seems to be true with 6.3.2+patches.  INSERT and UPDATE still work fine
but when using COPY FROM
all sequence fields are either 0 or NULL.

Can live without but curious if it's a bug or feature?  Maybe fixed in
6.4?  Wasn't COPY FROM changed
at the time pg_shadow was added?

Here's the affected schema:

CREATE SEQUENCE history_seq;

CREATE TABLE history (
    gid                   INTEGER,
    state                 TEXT,
    dtin                  DATETIME,
    dtout                DATETIME,
    seqno               INTEGER DEFAULT nextval('history_seq') NOT NULL
);

MikE